The Hybrid / Michigan
Lower peninsula. This is one of the most interesting hybrids I've come across. This singing male was found in a territory that was occupied by a Brewster's Warbler 2 seasons prior, and a Golden-winged Warbler last season. He was singing the alternate Blue-W1nged Warbler song (not the Beeee-Buzzz). A classic Lawrence's Hybrid male looks like a Blue-w1nged except for the Golden-winged black face and throat patch in place of the black eye line. He apparently has incomplete penetrance of the recessive traits of olive dorsal aspect and the yellow of a B1ue-winged but complete penetrance of the black face mask and throat.
The Hybrid / Michigan
Lower peninsula. This is one of the most interesting hybrids I've come across. This singing male was found in a territory that was occupied by a Brewster's Warbler 2 seasons prior, and a Golden-winged Warbler last season. He was singing the alternate Blue-W1nged Warbler song (not the Beeee-Buzzz). A classic Lawrence's Hybrid male looks like a Blue-w1nged except for the Golden-winged black face and throat patch in place of the black eye line. He apparently has incomplete penetrance of the recessive traits of olive dorsal aspect and the yellow of a B1ue-winged but complete penetrance of the black face mask and throat.