Author: Jennifer Ackerman
Publisher: Penguin
ISBN: 0735223033
Category : Nature
Languages : en
Pages : 369
Book Description
From the New York Times bestselling author of The Genius of Birds, a radical investigation into the bird way of being, and the recent scientific research that is dramatically shifting our understanding of birds -- how they live and how they think. “There is the mammal way and there is the bird way.” But the bird way is much more than a unique pattern of brain wiring, and lately, scientists have taken a new look at bird behaviors they have, for years, dismissed as anomalies or mysteries –– What they are finding is upending the traditional view of how birds conduct their lives, how they communicate, forage, court, breed, survive. They are also revealing the remarkable intelligence underlying these activities, abilities we once considered uniquely our own: deception, manipulation, cheating, kidnapping, infanticide, but also ingenious communication between species, cooperation, collaboration, altruism, culture, and play. Some of these extraordinary behaviors are biological conundrums that seem to push the edges of, well, birdness: a mother bird that kills her own infant sons, and another that selflessly tends to the young of other birds as if they were her own; a bird that collaborates in an extraordinary way with one species—ours—but parasitizes another in gruesome fashion; birds that give gifts and birds that steal; birds that dance or drum, that paint their creations or paint themselves; birds that build walls of sound to keep out intruders and birds that summon playmates with a special call—and may hold the secret to our own penchant for playfulness and the evolution of laughter. Drawing on personal observations, the latest science, and her bird-related travel around the world, from the tropical rainforests of eastern Australia and the remote woodlands of northern Japan, to the rolling hills of lower Austria and the islands of Alaska’s Kachemak Bay, Jennifer Ackerman shows there is clearly no single bird way of being. In every respect, in plumage, form, song, flight, lifestyle, niche, and behavior, birds vary. It is what we love about them. As E.O Wilson once said, when you have seen one bird, you have not seen them all.
The Bird Way
Author: Jennifer Ackerman
Publisher: Penguin
ISBN: 0735223033
Category : Nature
Languages : en
Pages : 369
Book Description
From the New York Times bestselling author of The Genius of Birds, a radical investigation into the bird way of being, and the recent scientific research that is dramatically shifting our understanding of birds -- how they live and how they think. “There is the mammal way and there is the bird way.” But the bird way is much more than a unique pattern of brain wiring, and lately, scientists have taken a new look at bird behaviors they have, for years, dismissed as anomalies or mysteries –– What they are finding is upending the traditional view of how birds conduct their lives, how they communicate, forage, court, breed, survive. They are also revealing the remarkable intelligence underlying these activities, abilities we once considered uniquely our own: deception, manipulation, cheating, kidnapping, infanticide, but also ingenious communication between species, cooperation, collaboration, altruism, culture, and play. Some of these extraordinary behaviors are biological conundrums that seem to push the edges of, well, birdness: a mother bird that kills her own infant sons, and another that selflessly tends to the young of other birds as if they were her own; a bird that collaborates in an extraordinary way with one species—ours—but parasitizes another in gruesome fashion; birds that give gifts and birds that steal; birds that dance or drum, that paint their creations or paint themselves; birds that build walls of sound to keep out intruders and birds that summon playmates with a special call—and may hold the secret to our own penchant for playfulness and the evolution of laughter. Drawing on personal observations, the latest science, and her bird-related travel around the world, from the tropical rainforests of eastern Australia and the remote woodlands of northern Japan, to the rolling hills of lower Austria and the islands of Alaska’s Kachemak Bay, Jennifer Ackerman shows there is clearly no single bird way of being. In every respect, in plumage, form, song, flight, lifestyle, niche, and behavior, birds vary. It is what we love about them. As E.O Wilson once said, when you have seen one bird, you have not seen them all.
Publisher: Penguin
ISBN: 0735223033
Category : Nature
Languages : en
Pages : 369
Book Description
From the New York Times bestselling author of The Genius of Birds, a radical investigation into the bird way of being, and the recent scientific research that is dramatically shifting our understanding of birds -- how they live and how they think. “There is the mammal way and there is the bird way.” But the bird way is much more than a unique pattern of brain wiring, and lately, scientists have taken a new look at bird behaviors they have, for years, dismissed as anomalies or mysteries –– What they are finding is upending the traditional view of how birds conduct their lives, how they communicate, forage, court, breed, survive. They are also revealing the remarkable intelligence underlying these activities, abilities we once considered uniquely our own: deception, manipulation, cheating, kidnapping, infanticide, but also ingenious communication between species, cooperation, collaboration, altruism, culture, and play. Some of these extraordinary behaviors are biological conundrums that seem to push the edges of, well, birdness: a mother bird that kills her own infant sons, and another that selflessly tends to the young of other birds as if they were her own; a bird that collaborates in an extraordinary way with one species—ours—but parasitizes another in gruesome fashion; birds that give gifts and birds that steal; birds that dance or drum, that paint their creations or paint themselves; birds that build walls of sound to keep out intruders and birds that summon playmates with a special call—and may hold the secret to our own penchant for playfulness and the evolution of laughter. Drawing on personal observations, the latest science, and her bird-related travel around the world, from the tropical rainforests of eastern Australia and the remote woodlands of northern Japan, to the rolling hills of lower Austria and the islands of Alaska’s Kachemak Bay, Jennifer Ackerman shows there is clearly no single bird way of being. In every respect, in plumage, form, song, flight, lifestyle, niche, and behavior, birds vary. It is what we love about them. As E.O Wilson once said, when you have seen one bird, you have not seen them all.
The Genius of Birds
Author: Jennifer Ackerman
Publisher: Penguin
ISBN: 0399563121
Category : Science
Languages : en
Pages : 354
Book Description
“Lovely, celebratory. For all the belittling of ‘bird brains,’ [Ackerman] shows them to be uniquely impressive machines . . .” —New York Times Book Review “A lyrical testimony to the wonders of avian intelligence.” —Scientific American An award-winning science writer tours the globe to reveal what makes birds capable of such extraordinary feats of mental prowess Birds are astonishingly intelligent creatures. According to revolutionary new research, some birds rival primates and even humans in their remarkable forms of intelligence. In The Genius of Birds, acclaimed author Jennifer Ackerman explores their newly discovered brilliance and how it came about. As she travels around the world to the most cutting-edge frontiers of research, Ackerman not only tells the story of the recently uncovered genius of birds but also delves deeply into the latest findings about the bird brain itself that are shifting our view of what it means to be intelligent. At once personal yet scientific, richly informative and beautifully written, The Genius of Birds celebrates the triumphs of these surprising and fiercely intelligent creatures. Ackerman is also the author of Birds by the Shore: Observing the Natural Life of the Atlantic Coast.
Publisher: Penguin
ISBN: 0399563121
Category : Science
Languages : en
Pages : 354
Book Description
“Lovely, celebratory. For all the belittling of ‘bird brains,’ [Ackerman] shows them to be uniquely impressive machines . . .” —New York Times Book Review “A lyrical testimony to the wonders of avian intelligence.” —Scientific American An award-winning science writer tours the globe to reveal what makes birds capable of such extraordinary feats of mental prowess Birds are astonishingly intelligent creatures. According to revolutionary new research, some birds rival primates and even humans in their remarkable forms of intelligence. In The Genius of Birds, acclaimed author Jennifer Ackerman explores their newly discovered brilliance and how it came about. As she travels around the world to the most cutting-edge frontiers of research, Ackerman not only tells the story of the recently uncovered genius of birds but also delves deeply into the latest findings about the bird brain itself that are shifting our view of what it means to be intelligent. At once personal yet scientific, richly informative and beautifully written, The Genius of Birds celebrates the triumphs of these surprising and fiercely intelligent creatures. Ackerman is also the author of Birds by the Shore: Observing the Natural Life of the Atlantic Coast.
The Bird King
Author: G. Willow Wilson
Publisher: Grove Press
ISBN: 0802146848
Category : Fiction
Languages : en
Pages : 340
Book Description
One of NPR’s 50 Best Science Fiction and Fantasy Books of the Decade: A fifteenth-century palace mapmaker must hide his powers in the time of the Inquisition . . . Award-winning author G. Willow Wilson’s debut novel Alif the Unseen was an NPR and Washington Post Best Book of the Year and established her as a vital American Muslim literary voice. Now she delivers The Bird King, an epic journey set during the reign of the last sultan in the Iberian peninsula at the height of the Spanish Inquisition. Fatima is a concubine in the royal court of Granada, the last emirate of Muslim Spain. Her dearest friend, Hassan, the palace mapmaker and the one man who doesn’t leer at her with desire, has a secret—he can draw maps of places he’s never seen and bend the shape of reality. When representatives of the newly formed Spanish monarchy arrive to negotiate the sultan’s surrender, Fatima befriends one of the women, not realizing that she will see Hassan’s gift as sorcery and a threat to Christian Spanish rule. With their freedoms at stake, what will Fatima risk to save Hassan and escape the palace walls? As the two traverse Spain with the help of a clever jinn to find safety, The Bird King asks us to consider what love is and the price of freedom at a time when the West and the Muslim world were not yet separate. “Wilson has a deft hand with myth and with magic, and the kind of smart, honest writing mind that knits together and bridges cultures and people.” —Neil Gaiman, author of Norse Mythology “A triumph . . . one of the best fantasy writers working today.” —BookPage “A treasure-house of a novel, thrilling, tender, funny, and achingly gorgeous. I loved it.” —Lev Grossman, author of the Magicians trilogy
Publisher: Grove Press
ISBN: 0802146848
Category : Fiction
Languages : en
Pages : 340
Book Description
One of NPR’s 50 Best Science Fiction and Fantasy Books of the Decade: A fifteenth-century palace mapmaker must hide his powers in the time of the Inquisition . . . Award-winning author G. Willow Wilson’s debut novel Alif the Unseen was an NPR and Washington Post Best Book of the Year and established her as a vital American Muslim literary voice. Now she delivers The Bird King, an epic journey set during the reign of the last sultan in the Iberian peninsula at the height of the Spanish Inquisition. Fatima is a concubine in the royal court of Granada, the last emirate of Muslim Spain. Her dearest friend, Hassan, the palace mapmaker and the one man who doesn’t leer at her with desire, has a secret—he can draw maps of places he’s never seen and bend the shape of reality. When representatives of the newly formed Spanish monarchy arrive to negotiate the sultan’s surrender, Fatima befriends one of the women, not realizing that she will see Hassan’s gift as sorcery and a threat to Christian Spanish rule. With their freedoms at stake, what will Fatima risk to save Hassan and escape the palace walls? As the two traverse Spain with the help of a clever jinn to find safety, The Bird King asks us to consider what love is and the price of freedom at a time when the West and the Muslim world were not yet separate. “Wilson has a deft hand with myth and with magic, and the kind of smart, honest writing mind that knits together and bridges cultures and people.” —Neil Gaiman, author of Norse Mythology “A triumph . . . one of the best fantasy writers working today.” —BookPage “A treasure-house of a novel, thrilling, tender, funny, and achingly gorgeous. I loved it.” —Lev Grossman, author of the Magicians trilogy
Birds by the Shore
Author: Jennifer Ackerman
Publisher: Penguin
ISBN: 0143134183
Category : Nature
Languages : en
Pages : 226
Book Description
From the bestselling author of The Genius of Birds, the revised and reissued edition of her beloved book of essays describing her forays along the Delaware shore For three years, Jennifer Ackerman lived in the small coastal town of Lewes, Delaware, in the sort of blue-water, white-sand landscape that draws summer crowds up and down the eastern seaboard. Birds by the Shore is a book about discovering the natural life at the ocean's edge: the habits of shorebirds and seabirds, the movement of sand and water, the wealth of creatures that survive amid storm and surf. Against this landscape's rhythms, Ackerman revisits her own history--her mother's death, her father's illness and her hopes to have children of her own. This portrait of life at the ocean's edge will be relished by anyone who has walked a beach at sunset, or watched a hawk hover over a winter marsh, and felt part of the natural world. With a quiet passion and friendly, generous intelligence, it explores the way that landscape shapes our thoughts and perceptions and shows that home ground is often where we feel the deepest response to the planet.
Publisher: Penguin
ISBN: 0143134183
Category : Nature
Languages : en
Pages : 226
Book Description
From the bestselling author of The Genius of Birds, the revised and reissued edition of her beloved book of essays describing her forays along the Delaware shore For three years, Jennifer Ackerman lived in the small coastal town of Lewes, Delaware, in the sort of blue-water, white-sand landscape that draws summer crowds up and down the eastern seaboard. Birds by the Shore is a book about discovering the natural life at the ocean's edge: the habits of shorebirds and seabirds, the movement of sand and water, the wealth of creatures that survive amid storm and surf. Against this landscape's rhythms, Ackerman revisits her own history--her mother's death, her father's illness and her hopes to have children of her own. This portrait of life at the ocean's edge will be relished by anyone who has walked a beach at sunset, or watched a hawk hover over a winter marsh, and felt part of the natural world. With a quiet passion and friendly, generous intelligence, it explores the way that landscape shapes our thoughts and perceptions and shows that home ground is often where we feel the deepest response to the planet.
The Bird-Friendly City
Author: Timothy Beatley
Publisher: Island Press
ISBN: 164283047X
Category : Architecture
Languages : en
Pages : 271
Book Description
How does a bird experience a city? A backyard? A park? As the world has become more urban, noisier from increased traffic, and brighter from streetlights and office buildings, it has also become more dangerous for countless species of birds. Warblers become disoriented by nighttime lights and collide with buildings. Ground-feeding sparrows fall prey to feral cats. Hawks and other birds-of-prey are sickened by rat poison. These name just a few of the myriad hazards. How do our cities need to change in order to reduce the threats, often created unintentionally, that have resulted in nearly three billion birds lost in North America alone since the 1970s? In The Bird-Friendly City, Timothy Beatley, a longtime advocate for intertwining the built and natural environments, takes readers on a global tour of cities that are reinventing the status quo with birds in mind. Efforts span a fascinating breadth of approaches: public education, urban planning and design, habitat restoration, architecture, art, civil disobedience, and more. Beatley shares empowering examples, including: advocates for “catios,” enclosed outdoor spaces that allow cats to enjoy backyards without being able to catch birds; a public relations campaign for vultures; and innovations in building design that balance aesthetics with preventing bird strikes. Through these changes and the others Beatley describes, it is possible to make our urban environments more welcoming to many bird species. Readers will come away motivated to implement and advocate for bird-friendly changes, with inspiring examples to draw from. Whether birds are migrating and need a temporary shelter or are taking up permanent residence in a backyard, when the environment is safer for birds, humans are happier as well.
Publisher: Island Press
ISBN: 164283047X
Category : Architecture
Languages : en
Pages : 271
Book Description
How does a bird experience a city? A backyard? A park? As the world has become more urban, noisier from increased traffic, and brighter from streetlights and office buildings, it has also become more dangerous for countless species of birds. Warblers become disoriented by nighttime lights and collide with buildings. Ground-feeding sparrows fall prey to feral cats. Hawks and other birds-of-prey are sickened by rat poison. These name just a few of the myriad hazards. How do our cities need to change in order to reduce the threats, often created unintentionally, that have resulted in nearly three billion birds lost in North America alone since the 1970s? In The Bird-Friendly City, Timothy Beatley, a longtime advocate for intertwining the built and natural environments, takes readers on a global tour of cities that are reinventing the status quo with birds in mind. Efforts span a fascinating breadth of approaches: public education, urban planning and design, habitat restoration, architecture, art, civil disobedience, and more. Beatley shares empowering examples, including: advocates for “catios,” enclosed outdoor spaces that allow cats to enjoy backyards without being able to catch birds; a public relations campaign for vultures; and innovations in building design that balance aesthetics with preventing bird strikes. Through these changes and the others Beatley describes, it is possible to make our urban environments more welcoming to many bird species. Readers will come away motivated to implement and advocate for bird-friendly changes, with inspiring examples to draw from. Whether birds are migrating and need a temporary shelter or are taking up permanent residence in a backyard, when the environment is safer for birds, humans are happier as well.
The Bird and the Blade
Author: Megan Bannen
Publisher: HarperCollins
ISBN: 006267417X
Category : Young Adult Fiction
Languages : en
Pages : 374
Book Description
A sweeping and tragic debut novel perfect for fans of The Wrath and the Dawn and Megan Whalen Turner. This young adult novel is an excellent choice for accelerated tween readers in grades 7 to 8, especially during homeschooling. It’s a fun way to keep your child entertained and engaged while not in the classroom. The Bird and the Blade is a lush, powerful story of life and death, battles and riddles, lies and secrets from author Megan Bannen. Enslaved in Kipchak Khanate, Jinghua has lost everything: her home, her family, her freedom . . . until the kingdom is conquered by enemy forces and she finds herself an unlikely conspirator in the escape of Prince Khalaf and his irascible father across the vast Mongol Empire. On the run, with adversaries on all sides and an endless journey ahead, Jinghua hatches a scheme to use the Kipchaks’ exile to return home, a plan that becomes increasingly fraught as her feelings for Khalaf evolve into an impossible love. Jinghua’s already dicey prospects take a downward turn when Khalaf seeks to restore his kingdom by forging a marriage alliance with Turandokht, the daughter of the Great Khan. As beautiful as she is cunning, Turandokht requires all potential suitors to solve three impossible riddles to win her hand—and if they fail, they die. Jinghua has kept her own counsel well, but with Khalaf’s kingdom—and his very life—on the line, she must reconcile the hard truth of her past with her love for a boy who has no idea what she’s capable of . . . even if it means losing him to the girl who’d sooner take his life than his heart.
Publisher: HarperCollins
ISBN: 006267417X
Category : Young Adult Fiction
Languages : en
Pages : 374
Book Description
A sweeping and tragic debut novel perfect for fans of The Wrath and the Dawn and Megan Whalen Turner. This young adult novel is an excellent choice for accelerated tween readers in grades 7 to 8, especially during homeschooling. It’s a fun way to keep your child entertained and engaged while not in the classroom. The Bird and the Blade is a lush, powerful story of life and death, battles and riddles, lies and secrets from author Megan Bannen. Enslaved in Kipchak Khanate, Jinghua has lost everything: her home, her family, her freedom . . . until the kingdom is conquered by enemy forces and she finds herself an unlikely conspirator in the escape of Prince Khalaf and his irascible father across the vast Mongol Empire. On the run, with adversaries on all sides and an endless journey ahead, Jinghua hatches a scheme to use the Kipchaks’ exile to return home, a plan that becomes increasingly fraught as her feelings for Khalaf evolve into an impossible love. Jinghua’s already dicey prospects take a downward turn when Khalaf seeks to restore his kingdom by forging a marriage alliance with Turandokht, the daughter of the Great Khan. As beautiful as she is cunning, Turandokht requires all potential suitors to solve three impossible riddles to win her hand—and if they fail, they die. Jinghua has kept her own counsel well, but with Khalaf’s kingdom—and his very life—on the line, she must reconcile the hard truth of her past with her love for a boy who has no idea what she’s capable of . . . even if it means losing him to the girl who’d sooner take his life than his heart.
101 Ways to Flip the Bird
Author: Jason Joseph
Publisher: Crown Archetype
ISBN: 0307480976
Category : Humor
Languages : en
Pages : 226
Book Description
So ticked off you’re at a loss for words? 101 Ways to Flip the Bird provides 101 creative ways to express exactly how you feel. Arm yourself with the perfect bird for every occasion: Some jerk cut you off in traffic? Opt for the Classic Flip, also appropriate when protesting a bad call by a referee (see page 2). Interrupted by a rude coworker? Try the Glasses Adjuster, subtle enough to use during a business meeting (see page 26). A joker makes a snide remark about your haircut? Cup a Bird behind your ear and flip them Sorry, I’m Deaf (see page 66). Your cheap friend is hitting you up for money again? Pull Here, I’ve Got Something For You out of your pocket (see page 38). First date boring you half to death with inane chatter? Amuse yourself with the Thinker, a simple and pensive Bird to the chin (see page 64).
Publisher: Crown Archetype
ISBN: 0307480976
Category : Humor
Languages : en
Pages : 226
Book Description
So ticked off you’re at a loss for words? 101 Ways to Flip the Bird provides 101 creative ways to express exactly how you feel. Arm yourself with the perfect bird for every occasion: Some jerk cut you off in traffic? Opt for the Classic Flip, also appropriate when protesting a bad call by a referee (see page 2). Interrupted by a rude coworker? Try the Glasses Adjuster, subtle enough to use during a business meeting (see page 26). A joker makes a snide remark about your haircut? Cup a Bird behind your ear and flip them Sorry, I’m Deaf (see page 66). Your cheap friend is hitting you up for money again? Pull Here, I’ve Got Something For You out of your pocket (see page 38). First date boring you half to death with inane chatter? Amuse yourself with the Thinker, a simple and pensive Bird to the chin (see page 64).
What It's Like to Be a Bird
Author: David Allen Sibley
Publisher: Knopf
ISBN: 0525520295
Category : Nature
Languages : en
Pages : 241
Book Description
The bird book for birders and nonbirders alike that will excite and inspire by providing a new and deeper understanding of what common, mostly backyard, birds are doing—and why: "Can birds smell?"; "Is this the same cardinal that was at my feeder last year?"; "Do robins 'hear' worms?" "The book's beauty mirrors the beauty of birds it describes so marvelously." —NPR In What It's Like to Be a Bird, David Sibley answers the most frequently asked questions about the birds we see most often. This special, large-format volume is geared as much to nonbirders as it is to the out-and-out obsessed, covering more than two hundred species and including more than 330 new illustrations by the author. While its focus is on familiar backyard birds—blue jays, nuthatches, chickadees—it also examines certain species that can be fairly easily observed, such as the seashore-dwelling Atlantic puffin. David Sibley's exacting artwork and wide-ranging expertise bring observed behaviors vividly to life. (For most species, the primary illustration is reproduced life-sized.) And while the text is aimed at adults—including fascinating new scientific research on the myriad ways birds have adapted to environmental changes—it is nontechnical, making it the perfect occasion for parents and grandparents to share their love of birds with young children, who will delight in the big, full-color illustrations of birds in action. Unlike any other book he has written, What It's Like to Be a Bird is poised to bring a whole new audience to David Sibley's world of birds.
Publisher: Knopf
ISBN: 0525520295
Category : Nature
Languages : en
Pages : 241
Book Description
The bird book for birders and nonbirders alike that will excite and inspire by providing a new and deeper understanding of what common, mostly backyard, birds are doing—and why: "Can birds smell?"; "Is this the same cardinal that was at my feeder last year?"; "Do robins 'hear' worms?" "The book's beauty mirrors the beauty of birds it describes so marvelously." —NPR In What It's Like to Be a Bird, David Sibley answers the most frequently asked questions about the birds we see most often. This special, large-format volume is geared as much to nonbirders as it is to the out-and-out obsessed, covering more than two hundred species and including more than 330 new illustrations by the author. While its focus is on familiar backyard birds—blue jays, nuthatches, chickadees—it also examines certain species that can be fairly easily observed, such as the seashore-dwelling Atlantic puffin. David Sibley's exacting artwork and wide-ranging expertise bring observed behaviors vividly to life. (For most species, the primary illustration is reproduced life-sized.) And while the text is aimed at adults—including fascinating new scientific research on the myriad ways birds have adapted to environmental changes—it is nontechnical, making it the perfect occasion for parents and grandparents to share their love of birds with young children, who will delight in the big, full-color illustrations of birds in action. Unlike any other book he has written, What It's Like to Be a Bird is poised to bring a whole new audience to David Sibley's world of birds.
The Bird is Gone
Author: Stephen Graham Jones
Publisher: University of Alabama Press
ISBN: 1573661090
Category : Fiction
Languages : en
Pages : 182
Book Description
A novel unlike any previous work of Native American fiction.
Publisher: University of Alabama Press
ISBN: 1573661090
Category : Fiction
Languages : en
Pages : 182
Book Description
A novel unlike any previous work of Native American fiction.
The Bird Room
Author: Chris Killen
Publisher: Canongate Books
ISBN: 1847674518
Category : Fiction
Languages : en
Pages : 209
Book Description
Alice is at work. Alice thinks I'm at work. I'm not at work. I'm trying to guess the password to her email account . . . When Will meets Alice, he can't believe his luck. She's smart, sexy and, much to Will's surprise, in love with him. Alice brings meaning to his urban existence. But true love never came easy and soon devotion leads Will to something darker. The Bird Room is a candid, funny and joyous portrait of love and desire in the modern age.
Publisher: Canongate Books
ISBN: 1847674518
Category : Fiction
Languages : en
Pages : 209
Book Description
Alice is at work. Alice thinks I'm at work. I'm not at work. I'm trying to guess the password to her email account . . . When Will meets Alice, he can't believe his luck. She's smart, sexy and, much to Will's surprise, in love with him. Alice brings meaning to his urban existence. But true love never came easy and soon devotion leads Will to something darker. The Bird Room is a candid, funny and joyous portrait of love and desire in the modern age.