Remsen, J.V. 1977 Blackburnian Warbler Dendroica fusca Sept. 17 Tijuana River Valley, San Diego Co., Calif.: 1 imm. ♀ at Otay Mesa. An extremely dull bird without much face pattern and in general resembling a fall Blackpoll; however, the eyeline was much more distinct, prominent, broad, and long; the wingbars seemed bolder; the yellow on the throat and breast was brighter; proportions different - a shorter and smaller bird than a Blackpoll; and of course there were two broad pale stripes on the back - pattern of Pectoral Sandpiper.