"Marbled Murrelets (Brachyramphus marmoratus) are small diving seabirds who have the unique adaptation of flying inland to nest in large forest trees along the west coast of North America (see review in Marshall, 1988). The dual nature of their life history, as forest bird and as seabird, presents problems to studying their biology as well as to conservation efforts. Loss of nesting forest habitat, extreme vulnerability to oil pollution (King and Sanger, 1979), and speculation that the population is in serious decline has led to their listing as a federally threatened species in October, 1992. There is currently a great need to understand more about Marbled Murrelet nesting and at-sea biology and behavior, so that appropriate conservation management plans can be developed. This report summarizes our findings from marine transect surveys of Marbled Murrelets along the open Oregon coast from June to August, 1992." (From Introduction)
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