Hi All: In the previous post it looks like the link to the paper was truncated, second try
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0065408
or
google "PLOS western grebe"
Salish Sea decline is 95% while continent wide it is 52%. So it appears there have been significant declines with redistribution.
The adult Heermann's continues at the Tahlequah dock on Vashon.

Gary Shugart, Slater Museum of Natural History, University of Puget Sound, Tacoma & Vashon Island