The Adaptive Modifications and the Taxonomic Value of the Tongue in Birds

The Adaptive Modifications and the Taxonomic Value of the Tongue in Birds PDF Author: Leon Lloyd Gardner
Publisher:
ISBN:
Category : Amphorophora
Languages : en
Pages : 1262

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The Adaptive Modifications and the Taxonomic Value of the Tongue in Birds

The Adaptive Modifications and the Taxonomic Value of the Tongue in Birds PDF Author: Leon Lloyd Gardner
Publisher:
ISBN:
Category : Amphorophora
Languages : en
Pages : 1262

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The Practical Value of Birds

The Practical Value of Birds PDF Author: Junius Henderson
Publisher:
ISBN:
Category : Beneficial birds
Languages : en
Pages : 364

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Proceedings of the United States National Museum

Proceedings of the United States National Museum PDF Author: United States National Museum
Publisher:
ISBN:
Category : Anthropology
Languages : en
Pages : 1184

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Avian Biology

Avian Biology PDF Author: Donald S. Farner
Publisher: Elsevier
ISBN: 1483269426
Category : Nature
Languages : en
Pages : 637

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Book Description
Avian Biology, Volume II is a collection of papers that deals with the biology of birds such as their integumentary and respiratory systems. One paper describes the integument of birds that includes the skin, feathers, pterylosis, skin muscles, and other integumentary derivatives such as beaks, comb, claws, and spurs. The book explains the process of molting and the different generations of feathers; such molting is dependent on the wear and tear of the plumage, as well as hormonal changes. One author compares the blood vascular system of birds and mammals, and then gives a detailed description of avian hematology. Other papers deal with the respiratory functions, digestive system, and the nutritional needs of birds. Of interest is one author's description of the production of nutritive fluids, holocrine, which is secreted for the young. This secreted fluid contains about 23 percent protein, 10 percent fat, and no sugar. Unlike mammalian milk, it also contains cells. Another paper examines the intermediary metabolism of birds and the climatic effects on metabolism. This book is suitable for bird enthusiasts, zoologists, and avian biologists.

The Auk

The Auk PDF Author:
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 444

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Adaptive Modifications for Tree-trunk Foraging in Birds

Adaptive Modifications for Tree-trunk Foraging in Birds PDF Author: Frank Richardson
Publisher:
ISBN:
Category : Adaptation (Biology).
Languages : en
Pages : 72

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For the Birds

For the Birds PDF Author: Laura Erickson
Publisher: U of Minnesota Press
ISBN: 9781452906201
Category : Nature
Languages : en
Pages : 410

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Book Description
In 365 day-by-day sketches, Laura Erickson brings more than 250 birds right into your living room-from rare hawk owls to elusive sedge wrens to plastic lawn flamingos. Light-hearted, yet authoritative, For the Birds is brimming with fascinating birdlore. Did you know that you can mail three chickadees with a single stamp? That Black-billed Cuckoos flourish on a diet of army worms? That winter finches are especially attracted to feeders offering grit and eggshells? Enjoy Laura's entertaining observations and record your own in For the Birds-an uncommon guide.

Report of the Assistant Director and of the Curators of the U.S. National Museum

Report of the Assistant Director and of the Curators of the U.S. National Museum PDF Author: United States National Museum
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 904

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Sunbirds

Sunbirds PDF Author: Clive F. Mann
Publisher: A&C Black
ISBN: 140813568X
Category : Nature
Languages : en
Pages : 385

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Book Description
Sunbirds is the first book since the 19th Century to cover in detail all the world's sunbirds and spiderhunters - the Nectarinidae. It also includes the allied families of flowerpeckers and sugarbirds; a total of 176 species is described and illustrated. The book has been designed to help readers identify all of these species and also their various subspecies, the most distinctive of which are illustrated as well as described. Each species account provides a distribution map, a summary of identification criteria and a description of how the species differs from similar ones. The calls and songs, habitat, geographical distribution, status, movements, food (including a list of known food plants), habits, and breeding biology are also described. Finally, a full description of the species and salient features of each subspecies is given, together with measurements and references. Sunbirds not only aids identification, it provides a wealth of information on the ecology and behaviour of these birds. The authors have carried out extensive fieldwork in Asia and Africa. They have also studied skins, nests and eggs held by museums, analysed tape recordings and critically reviewed the vast amount of material contained in books and scientific journals. The superb plates would not have been possible without the exhaustive study of specimens which, together with the use of photographs of living birds, has resulted in the artist, Richard Allen, capturing the essence of the birds, their 'jizz', and accurately portraying the beautiful, bright, often iridescent, plumages of these spectacular families.

The Ibis

The Ibis PDF Author:
Publisher:
ISBN:
Category : Birds
Languages : en
Pages : 970

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