Smithsonian Miscellaneous Collections, Vol. 143 (Classic Reprint)

Bücher

Angebote / Angebote:

Excerpt from Smithsonian Miscellaneous Collections, Vol. 143Ornithological literature abounds in descriptions of the habits and activities of birds, while anatomical studies are less common and are related mostly to taxonomy. Attempts to correlate structure with function in birds are few, yet this is a very intriguing subject for study since birds are among the most active members of the animal kingdom. This is re¿ected in their high rate of metabolism and ele vated temperature. Their versatility is great, they can ¿y, run, or swim, some performing all these activities, while others are limited to one or two. However, certain species excel in locomotion in the air, on the land, or in the water.We note the explosive ¿ight of the grouse, the graceful glide of the swallow, the soaring of the vulture, the poise of the hummingbird, the racing of the roadrunner, and the diving of the loon. Their skill can be seen, their speed can be measured, but the relative power involved escapes us.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.