Birds of north america pdf

These include the first freshwater occurrences and latest records of the order Hesperornithiformes, an extinct group of diving birds whose marine members had probably lost their powers of flight by the end of birds of north america pdf Early Cretaceous. Minimal pachyostosis in the freshwater form suggests the possibility of volant abilities. Check if you have access through your login credentials or your institution.

2012 Published by Elsevier B. This is a featured list. Click here for more information. As of January 2016, there are 464 species and a species pair definitively included in the official list.

Twelve additional species, one of which is identified only at the genus level, are on the list but classed as provisional. Unless otherwise noted, all species listed below are considered to occur regularly in North Carolina as permanent residents, summer or winter visitors, or migrants. The family Anatidae includes the ducks and most duck-like waterfowl, such as geese and swans. These birds are adapted to an aquatic existence with webbed feet, bills which are flattened to a greater or lesser extent, and feathers that are excellent at shedding water due to special oils. Forty-five species have been recorded in North Carolina. The New World quails are small, plump terrestrial birds only distantly related to the quails of the Old World, but named for their similar appearance and habits. One species has been recorded in North Carolina.