A multimedia research database providing comprehensive and authoritative information on birds from all over the world. Find detailed accounts on over 10,000 species of birds and 250 bird families that describe behaviours, habitat, nests, eggs and nestlings, and more. The accounts are supported by range maps, and photographs and videos from the Macaulay Library, a scientific archive at the Cornell Lab of Ornithology.

The content is sourced from the following works in ornithology:

• Birds of North America (reference resource)
• The Handbook of The Birds of the World (reference resource)
• Neotropical Birds (reference resource)
• Bird Families of the World: An Invitation to the Spectacular Diversity of Birds (reference)
• Macaulay Library (multimedia)
• eBird (multimedia)
• Internet Bird Collection (multimedia)