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Valley-floor censuses of the Critically Endangered Yellow-crested Cockatoo Cacatua sulphurea occidentalis on Komodo Island, East Nusa Tenggara province, Indonesia, point to a steep population decline over a six-year period

• Authors : Imansyah, M Jeri; Purwandana, Deni; Ariefiandy, Achmad ...

• Source: 32:66-71

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The purpose of bird censuses and how to take them /

• Authors : Cooke, May Thacher, 1885; Harvard University, Museum of Comparative Zoology, Ernst Mayr Library

Subjects: Bird populations

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Report on bird censuses in the United States, 1916 to 1920 /

• Authors : Cooke, May Thacher, 1885; U.S. Department of Agriculture, National Agricultural Library

Subjects: Bird populations; Birds; United States

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Report on bird censuses in the United States, 1916 to 1920 /

• Authors : Cooke, May Thacher, 1885; American Museum of Natural History Library

Subjects: 59.82:07; Bird populations; Birds

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Report on bird censuses in the United States, 1916 to 1920

• Authors : Cooke, May Thacher, 1885-1963; U.S. Department of Agriculture, National Agricultural Library

Subjects: Bird populations; Birds; United States

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Report on bird censuses in the United States, 1916 to 1920

• Authors : Cooke, May Thacher, 1885-1963; American Museum of Natural History Library

Subjects: Bird populations; Birds; United States

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Scheduling censuses of breeding White Pelicans (Pelecanus erythrorhynchos) in northern Alberta

• Authors : Beaver, Rick D.; Lewin, Victor; New York Botanical Garden, LuEsther T. Mertz Library

• Source: 95:198-201

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Censuses and Breeding Observations of the Birds on Kohala Mountain, Hawaii

• Authors : Van Riper, Charles; Harrison, Julian R.; BioStor

• Source: 94:463-476

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CENSUSES OF ROCKY SHORE PROSOBRANCHS FROM WASHINGTON USA AND COSTA-RICA

• Authors : Spight, T M; BioStor

• Source: 18:309-317

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Christmas Bird Censuses, 1940.

• Authors : New York Botanical Garden, LuEsther T. Mertz Library

• Source: 55:27-30

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