Radar-based monitoring of marbled murrelets

Article Abstract:

Research describing movement patterns of Marbled Murrelets (Brachyramphus marmoratus) in the Olympic Peninsular of Washington is presented. Radar monitored daily, monthly and annual patterns of abundance are examined.

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Abundance and distribution of marbled and Kittlitz's murrelets in southcentral and southeast Alaska

Article Abstract:

A survey of marbled and Kittlitz's murrelets, Brachyramphus marmoratus and B. brevirostris, respectively, in Lower Cook Inlet, Prince William Sound and Southeast Alaska estimated murrelets in Lower Cook Inlet at 58,227 +/- 16,058 in the summer and 11,627 +/- 7,410 in the eastern half in winter. In Prince William Sound in four summers, mean estimates of murrelets were at 113,652 +/- 25,900 and 24,979 +/- 11,710 in four winters. In Southeast Alaska in summer 1994, murrelets were estimated at 687,061 +/- 201,162. Southeast Alaska had the largest population densities.

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Evidence of male-bias in capture samples of marbled murrelets from genetic studies in British Columbia

Article Abstract:

Marbled Murrelets were captured over four years using a floating mist-net system, and a night lighting method to determine their sex. A newly developed molecular technique was used to sex the birds as Marbled Murrelets are sexually monomorphic. There was a significant male-bias in murrelets captured with the mist nets, but there was not male bias when using the night lighting method.

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