Ruby-throated Hummingbird (Archilochus colubris)

Ruby-Throated Hummingbird at Cardinal Flower
Image source: Bill Buchanan, U.S. Fish and Wildlife Service

Ruby-throated Hummingbird Fact Sheet | PDF

Ruby-throated Hummingbird Phenophase Definitions | PDF

Ruby-throated Hummingbird Datasheet (PDF)