A June study of the Black Oystercatcher (Haematopus bachmani) by Audubon California and the U.S. Fish and Wildlife Service counted 1,346 birds and 175 nests. This is higher than the previous estimate of 1000 to 1200 birds. Nesting and foraging habitats are strong determinants of population size.
Read more at Audublog Black Oystercatcher Population Surprises Scientists.
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