GRACKLES AND RED-WINGS
Flocks of north-bound purple grackles and red-winged blackbirds flow into southeastern Pennsylvania during March each year. Those noisy gatherings of related blackbird species, whether in groups of their own, or in mixed congregations, land on fields, meadows and fields to feed on invertebrates, grain, seeds and everything else that's edible. And their pretty, interesting flocks move from place to place, as food runs out in each spot. Interestingly, both these lovely kinds of blackbirds also do much foraging on the shores of waterways and ponds. One can see them flipping leaves and pebbles over to catch the invertebrates that might have been sheltering underneath. And these blackbirds also poke through piles of twigs or grass heaped on the shores by higher than usual water. Both blackbird species are attractive. Grackles have a purple and green sheen on their black feathers....