Sampling Marbled Murrelets at Sea: Tests of Survey Methods and Designs

The marbled murrelet is a small, nondescript seabird that was federally listed as threatened under the Endangered Species Act in 1992. This species has a unique natural history among seabirds in that it travels up to 50 mi inland away from the ocean to establish nest sites in the canopies of large trees in older-successional forests (Hammer and Nelson 1995)