Do you when Ruby-throated Hummingbirds are on the move? Do you want to know when orioles and grosbeaks may show up in your yard?  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