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Invertebrate populations in the nests of a screech owl otus asio and an american kestrel falco sparverius in central new york usa



Invertebrate populations in the nests of a screech owl otus asio and an american kestrel falco sparverius in central new york usa



Entomological News 101(3): 170-192



Screech owl (Otus asio) nest material from a tree hole in Syracuse, N.Y., contained 22,991 arthropods of 61 species. Arthropod density was 131/g dry weight of nest material. An American Kestrel (Falco sparverius) nest in a nest box in Jamesville, N.Y., yielded 26,553 invertebrates of 93 species. Arthropod density was 38/g dry weight of nest material. Lists of the species found and their populations are presented, and their trophic and symbiotic relationships are discussed. Bird parasite levels were extremely low. Litter fauna was dominant in the screech owl nest, while stored products fauna was dominant in the Kestrel nest.

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