Did you know that Ruby-throated Hummingbirds are already on the move? Did you know orioles and grosbeaks are already moving North in some areas?  Use the following resources to track migration and observe regularly updated maps:

www.birdcast.info--Weekly regional migration predictions, species on the move data, and loads more info
www.ebird.org/ebird/map--Customized views for species
www.maps.journeynorth.org--Hummingbirds, orioles and more
www.hummingbirdcentral.com--Hummingbirds