overcast and 6 degrees at the start.
Records say that this is the coldest April since 1937.

Botany Highlight: ground ivy in flower, catnip

                                                                         Glechoma hederacea (Ground ivy)

Bird Highlight: catbird, brown thrasher, common tern, yellow warbler, savannah sparrow, chimney swift.

                                                                                Yellow warbler

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)