The New Encyclopædia Britannica, Volume 2Encyclopædia Britannica, 1992 - 32 pages |
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Page 229
... feathers and forelimbs modified into wings . A brief treatment of birds follows . For full treatment , including illustrations , see MACROPAEDIA : Birds . The dispersal of birds is almost universal due to their flight capacity ...
... feathers and forelimbs modified into wings . A brief treatment of birds follows . For full treatment , including illustrations , see MACROPAEDIA : Birds . The dispersal of birds is almost universal due to their flight capacity ...
Page 230
... Feather muscles in the skin can raise or depress the feathers . A pectoralis muscle lowers the wing , opposed by a supra- coracoideus , which raises it with a pulley - like action through a tendon . Like mammals , and unlike reptiles ...
... Feather muscles in the skin can raise or depress the feathers . A pectoralis muscle lowers the wing , opposed by a supra- coracoideus , which raises it with a pulley - like action through a tendon . Like mammals , and unlike reptiles ...
Page 231
... feathers are elongated as wires or twisted narrow ribbons , and their filmy flank plumes can be raised and brought forward over the back , hiding the wings . The greater bird - of - paradise ( P. apoda ) has been introduced into the ...
... feathers are elongated as wires or twisted narrow ribbons , and their filmy flank plumes can be raised and brought forward over the back , hiding the wings . The greater bird - of - paradise ( P. apoda ) has been introduced into the ...
Contents
Beckford detail from an oil painting | 107 |
John Hoppner c 1800 in the Salford | 234 |
To make the best use of the Britannica | 260 |
Copyright | |
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