Tuesday, May 14, 2013

Palm Warbler

I previously blogged about Palm Warblers last May. On Friday, Erika and I visited the recently burned prairie at the Carpenter Nature Center in nearby Washington Co., Minnesota. I have never seen so many Palm Warblers in one place. The birds actively fed in the burned grass of their managed prairie. Perhaps the ground was warmed by the blackened earth, thereby releasing an insect hatching. Burned prairies do heat up and support elevated plant growth. Prairies are also managed in this was to destroy invasive and non-fired resistant plant species. Unfortunately, frequent burns in relatively small grasslands destroy many rare, prairie-inhabiting butterfly larvae.

Among the Palm Warblers flitted an utterly nondescript bird. What was it? This little gray bird appeared to have few discernible field marks. The presence of a faint wingbar and faint flank and back streaks, along with the slightly brighter crown all add up, for me, to this bird being a female Palm Warbler in basic plumage. Add to that, the fact that this bird was among a large flock of more typically patterned Palm Warblers. Any other suggestions?

No comments:

Post a Comment