Photograph of Yellow-headed Blackbird - (c) Paul Marto

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Reference Resources

Birds of North America

Website

Species accounts on North American birds, with information about their characteristics, distribution, systematics, behavior, ecology, demography, and conservation. Co-produced by AOSCornell Lab of Ornithology, and The Academy of Natural Sciences. Free for AOS members (read more »).

Neotropical Birds

Website

Species accounts on Neotropical birds, with information about identification, distribution (including interactive maps), systematics, life history, conservation, and priorities for future research. Produced by the Cornell Lab of Ornithology. Available free of charge.

Searchable Ornithological Research Archive

Website

A collaboration between AOS, the Association of Field Ornithologists, the Wilson Ornithological Society, and the University of New Mexico Libraries. Provides access to ornithological literature in North America since 1884, including both The Auk (1884- ) and The Condor (1899- ).

Biodiversity Heritage Library

Website

A consortium of natural history and botanical libraries digitizing the legacy literature held in their collections. Provides access to some ornithological titles not found in other bird-specific archives, including museum publications and field notes. Available free of charge. 

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