List of Birds In Antarctica - With Pictures, Facts, Chart . . . Adaptations of Antarctic Birds The birds living in the Antarctic usually have several adaptations for surviving extreme cold These include: Water-repellent Feathers — Some penguins, like the Emperor and Gentoo, have feathers capable of repelling water This helps to keep their skin waterproof and their bodies warm
Taxonomy - Birds of the World Birds of the World (BOW) is a powerful resource for understanding the diversity of avian life BOW uses a single taxonomy, the eBird Clements Checklist (Clements), across all of its content As is true of most other major global avian checklists, Clements follows the Biological Species Concept (BSC)
The Nervous System and Senses - Ornithology Birds are highly visual animals; they have to be to be able to fly The importance of birds' eyes is implied by their size - they are the largest relative to the body of all animals Some hawks and owls have eyes as large as human eyes The eyes of the ostrich, at 50 mm in diameter are the largest of any land vertebrate In some owls, the eyes comprise up to 1 3 of the total weight of the head
Vertebrates – Introductory Biology: Evolutionary and . . . In the past, the most common division of amniotes has been into classes Mammalia, Reptilia, and Aves Birds are descended, however, from dinosaurs, so this classical scheme results in groups that are not true clades We will discuss birds as a group distinct from reptiles with the understanding that this does not reflect evolutionary history
15 •••••• chapter and the accompanying evolution of a highly differentiated brain and paired special sense organs contributed in large measure to the successful adaptive radiation of the vertebrates 4 Paired appendages that appeared in aquatic verte-brates were successfully adapted later as jointed limbs for efficient locomotion on land or as wings for flight
Moa - Wikipedia The word moa is a Polynesian term for domestic fowl The name was not in common use among the Māori by the time of European contact, likely because the bird it described had been extinct for some time, and traditional stories about it were rare
Metabolism and Thermoregulation - Ornithology The expenditure of energy involves elaborate chemical reactions, most of which are sensitive to temperature An endothermic (warm-blooded) animal is relatively independent of environmental temperatures since its body is already warm and ready to go In birds and mammals the metabolic cost of maintaining endothermy is expensive, requiring at least 90% of total metabolism to be devoted to the