Our Spring has been so cold and wet . . . plants and trees have been late to flower . . . and thus the caterpillars that warblers rely on for food have been late to emerge. A couple weeks ago we had dozens of Yellow-rumped Warblers on our suet feeders as they were stressed from lack of food.
It appears now that the Warbler migration has become compressed by the weather. This morning I went to Hinkley Park in South Portland, Maine and in 90 minutes saw the following warblers:
- Black-throated Blue
- Cape May
- Common Yellow-throat
and Northern Parula
. . . all basically standing in the same spot.