Hi: I was struck with Chris Knight’s post about recently viewing less-than- definitive fields marks on a Winter/Pacific Wren. Sibley presents this tricky identification dilemma by being equivocal. For example, he states for the Pacific Wren “ …from Winter Wren….averages slightly darker and more rufous, best identified by voice.” For voice Sibley continues with more equivocation by stating “…each male Winter sings a repertoire of two songs, while each male Pacific switches between thirty and more songs.” This statement suggests there could be variation in the Pacific Wren song. How would one know which song type or variation of song type you are hearing? Also, this statement suggests there could be overlap in song types between the two wrens. In addition, what's not been established is the degree of variation for each wren and the possible degree of overlapping features.
Annoying as it is some Winter/Pacific wrens just can’t adequately be ID in the field at this time. Let’s keep working on it. Thanks for Chris’s informative post. Bob Righter Denver CO -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to cobirds+unsubscr...@googlegroups.com. To post to this group, send email to cobirds@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/95EBCCC5-E583-4313-BB4C-6E9BE515E4EF%40earthlink.net. For more options, visit https://groups.google.com/d/optout.
