Most Orioles will have left the area to head up to their nesting sights up north.
Wintering sparrows begin to head north; the White-throated are usually the last to go.
Black-bellied Whistling-Ducks arrive at inland breeding sites.
Painted Buntings begin to arrive late in the month
Ruby Throated Hummingbirds that winter deep in Central America will arrive for nesting season.
Spring migration brings the American Redstart, Ovenbird, Indigo Bunting, Baltimore and Orchard Oriole, Red-eyed Vireo early in the month and the Yellow Warbler, Rose-breasted and Blue Grosbeak later.
Mature male Rose-breasted Grosbeaks arrive about three days before the females. First year males usually arrive last.