Photo by Bill Reynolds

Ruby-throated Hummingbird (Archilochus colubris) is the smallest breeding bird in the eastern United States and southeastern Canada. It is seldom seen but easily recognized because it is the only hummingbird that breeds in or migrates through Minnesota. It is a migratory bird, arriving in Minnesota in late April and early May. It is a solitary breeder—after mating the male has nothing more to do with the female or its offspring. In the fall, adults migrate across the Gulf of Mexico or along the western coast of Mexico to Central or South America.

http://www.minnesotaseasons.com/Birds/Ruby-throated_Hummingbird.html