Warblers and other passerines have begun to pass through central Iowa. In fact, even along College Creek (including our yard which borders College Creek) has been decent for migrants. Over the last 2 days we've seen these species in the area:
Numerous RED-EYED VIREOS, WARBLING VIREOS, BALTIMORE ORIOLES, LEAST FLYCATCHERS, etc.
Yesterday, we had this GOLDEN-WINGED WARBLER just down the path from our yard: