Species Index: Uncategorized

“Burket’s” Warbler

August 21, 2017 total solar eclipse

Barrow scenery

Lawrence’s Warbler (wwpp), with two recessive genes for each trait, can not be accounted for by any first generation hybrid pairing. Rather, it has to be the result of a pairing between either two Brewster’s (considered exceedingly rare), or a pairing between a Brewster’s and a heterozygous Golden-winged or a heterozygous Blue-winged. Continue reading

Posted on by john | Leave a comment