The most comprehensive reference for the life histories of over 760 bird species that breed in the United States and Canada. Species accounts are written by ornithologists and other experts and are now accompanied by new sounds, images, video, and distributional maps and model output generated by eBird.
Zoological Record is a comprehensive index to zoological literature covering from 1864 to present. Records cover every aspect of zoology, including biochemistry, behavior, ecology evolution, genetics, and so forth. Over 5,000 international serials plus approximately 1,500 non-serial publications are currently monitored, including professional journals, magazines, newsletters, monographs, books, reviews, and conference proceedings.