Brewster's Warbler-fall female - a photo on Flickriver

            A Brewster's warbler is a hybrid that results from a Golden-winged warbler mating with a Blue-winged warbler. As such it has plumage features of both species. I've had the good fortune of photographing over a dozen Brewster's including both first generation and second generation back-crosses. We had 4 this Spring on my Michigan trip including one female. I've photographed females of this hybrid before including both first and 2nd generation back-crosses but this was the best opportunity I've had with a female Brewster's to date. The image of this bird is from Georgia as it was migrating along the Chattahoochee River corridor. Kudos to my never tiring friend Romin who said let's try this corner once more for migrants after a generally slow morning. I otherwise would have missed this bird and had an unmemorable morning.

1st generation Brewster's do have some yellow below and the females have more than the males but the amount of yellow below is far less than even the dullest of the Blue-winged warblers. See my previous post for more on the Blue-winged warbler. 

Above this bird's coloration is similar to a female Golden-winged warbler. Its eyeline (from Blue-winged parentage) is more gray than black and its crown has a great deal of olive in it with a small forehead stripe of brighter yellow all of which points to a female rather than a male. Its wingbars are white similar to what is found in a Blue-winged warbler.

Finally notice the beak coloration which is more brown/gray than black which is the case with all fall winged warblers whether they are Go1den-winged, B1ue-winged, or hybrids. Generally you can look at a photograph of a winged warbler and know whether it was taken in Spring or Fall just by beak coloration.

Taken on: October 2, 2020

Tags:

Georgia

Brewster's Warbler

female Brewster's warbler

fall female Brewster's warbler

2020

hybrid « less

Sets appears in: • fall warblers • hybrid warblers

Stats: 2,559 views / 31 comments

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