Ruby-throated Hummingbird--

Female

Archilochus colubris

The ruby-throated hummingbird is a small bird, with a wingspan of 8-11 cm (3.1-4.3 in) and a length of 7-9 cm (2.8-3.5). Only the males have the little red patch on their throat. The females usually have no throat patch, though some will have a white-ish throat patch. The females are also generally larger than the males. They are solitary creatures, and all ages of both genders are aggressive and protective of their territory. The only time two birds will be seen together is if they are fighting, but more often it is mating. The females are the sole caretakers of her young, until they are 22-25 days old. Then the young leave the nest.

Male

They are found in the eastern half of the United States, mostly everywhere east of the Mississippi River. When migrating, they can be found a little bit more western areas, as well as most of Mexico. They will migrate to southern Mexico, also to the southern-most tip of Florida.

They love to feed from hummingbird feeders.

The ruby-throated hummingbird has a conservation status of least concern.

Sources:

http://www.allaboutbirds.org/guide/Ruby-throated_Hummingbird/id?wspapp=12227116744&gclid=CPzHq7PNua8CFc6a7QodWFzghA

http://en.wikipedia.org/wiki/Ruby-throated_Hummingbird

http://www.hummingbirds.net/rubythroated.html