By Katrina van Grouw
There is extra to a chook than just feathers. And simply because birds developed from a unmarried flying ancestor does not imply they're structurally all of the related. With over 385 wonderful drawings depicting two hundred species, The Unfeathered Bird is a richly illustrated publication on chook anatomy that provides refreshingly unique insights into what is going on underneath the feathered floor. each one beautiful drawing is made of a precise specimen and reproduced in luxurious huge layout. The birds are proven in real looking positions and engaged in habit ordinary of the species: an underwater view of the skeleton of a swimming loon, the musculature of a porpoising penguin, and an unfeathered sparrowhawk plucking its prey. Jargon-free and simply obtainable to any reader, the full of life textual content relates birds' anatomy to their way of life and evolution, interpreting such questions as why penguins are higher than auks, no matter if harrier hawks fairly have double-jointed legs, and the adaptation among wing claws and wing spurs. A landmark in renowned chook books, The Unfeathered Bird is a needs to for an individual who appreciates birds or chicken art.
- A specified booklet that bridges paintings, technological know-how, and background
- Over 385 attractive drawings, artistically prepared in a luxurious large-format e-book
- Accessible, jargon-free text--the in basic terms ebook on chicken anatomy aimed toward the overall reader
- Drawings and textual content all in keeping with real chook specimens
- Includes so much anatomically detailed poultry teams
- Many species by no means illustrated sooner than
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Additional info for The Unfeathered Bird
It’s exciting stuff to watch as the hawk repeatedly changes its direction, sometimes diving through bushes, sometimes dodging overhanging branches in the chase. They rely on short bursts of powered flight but save energy by alternating flapping with gliding. 36 African Harrier-Hawk Polyboroides typus Right leg, showing astonishing range of foot movement. The term “doublejointed” is a misnomer, however. 37 Black Kite Milvus migrans Peregrine Falcon Falco peregrinus Bald Eagle Haliaeetus leucocephalus Philippine Eagle Pithecophaga jefferyi Skulls.
Harrier hawks don’t hunt in flight. They probe and feel into cracks in trees, among palm fronds, and into the communal nests of weaver birds. For this they don’t need long thighs, and long toes would simply get in the way. But they do need legs that can bend backward and sideways in contortions that are seemingly anatomically impossible. The popular term for this ability is “double-jointed,” but an examination of the skeleton of their legs will show that they have exactly the same number and formation of joints as any other bird group.
On the upper surface of the pygostyle lies the preen gland, a raised knob of skin that secretes an oily substance from two oval globular masses on either side. This substance is vital to feather maintenance, though it may be supplemented, or even replaced, by powder produced by specialized patches of down feathers. 27 part two: specific I ACCIPITRES Bill somewhat hooked downwards, the upper mandible dilated near the point, or armed with a tooth; nostrils open; legs short, strong; feet formed for perching, having 3 toes forwards and one backwards; toes warty under the joints; claws hooked and sharp-pointed; body muscular; flesh tough and not fit to be eaten; food the carcasses of other animals, which they seize and tear; nest in high places; eggs about 4; female larger than the male.