Black-throated Blue Warbler - Paruline bleue
A late fall migrant - hence the background, as he posed among a variety of transitional foliage, mostly Sumac - picks his way towards his next insect meal. One of the things that makes the Black-throated Blue distinctive is that the differences between males and females - so pronounced they were thought to be separate species - starts at birth. Unlike many other birds, the male is always blue and the female not blue at all, from the time they fledge. One of the neat things I found with this bird was its greenish tinge, which is the mark of a juvenile male. I had never seen it before, or at least never noticed it.
Black-throated Blue Warbler - Paruline bleue
A late fall migrant - hence the background, as he posed among a variety of transitional foliage, mostly Sumac - picks his way towards his next insect meal. One of the things that makes the Black-throated Blue distinctive is that the differences between males and females - so pronounced they were thought to be separate species - starts at birth. Unlike many other birds, the male is always blue and the female not blue at all, from the time they fledge. One of the neat things I found with this bird was its greenish tinge, which is the mark of a juvenile male. I had never seen it before, or at least never noticed it.