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The goal of this study was to increase reproductive behaviors in a captive colony of Northern Bald Ibis (Geronticus eremita) at the Bronx Zoo. The Northern Bald Ibis is classified as critically endangered by the IUCN, with only about 100 known breeding pairs in the wild. Our analysis of zoo breeding and colony size data confirmed earlier observations that(More)
We compared embryonic development of two lines of chickens that exhibit different patterns of postnatal growth. Classical staging techniques and morphological measurements of bone, cartilage, feather and intestines were used to test the hypothesis that differences in postnatal growth would be reflected in patterns of embryonic tissue partitioning. During(More)
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