overcast and 6 degrees at the start.
Records say that this is the coldest April since 1937.
Botany Highlight: ground ivy in flower, catnip
Bird Highlight: catbird, brown thrasher, common tern, yellow warbler, savannah sparrow, chimney swift.
Species list: double-crested cormorant, great blue heron, Canada goose, mallard, turkey vulture, sharp-shinned hawk, red-tailed hawk, ring-billed gull, common tern, rock dove, chimney swift, common flicker, hairy woodpecker, downy woodpecker, tree swallow, rough-winged swallow, barn swallow, blue jay, American crow, black-capped chickadee, brown creeper, gray catbird, brown thrasher, American robin, ruby-crowned kinglet, European starling, yellow warbler, yellow-rumped warbler, house sparrow, red-winged blackbird, brown-headed cowbird, northern cardinal, American goldfinch, savannah sparrow, dark-eyed junco, chipping sparrow, white-throated sparrow, song sparrow. (38 species)