Ruby-Throated Hummingbird (Archilochus colubris) Posted on August 19, 2014 by wildlifeatwork The Ruby-Throated Hummingbird is the smallest bird species that breeds in the Eastern United States and most widespread of all hummingbird species. This hummingbird was photographed feeding at Oregon Ridge Park in Cockeysville, Maryland. Share this:TwitterFacebookLike Loading... Related