The Bumblebee Hummingbird (Selasphorus heloisa) near San José del Pacifico, Oaxaca, Mexico. Guide: Eric Antonio, who also took the photo of the thumbnail. Sound recording by peter Boesman on Xeno Canto (XC219274). This hummingbird is predominantly found in Mexico, but has occurred as a vagrant in the United States (Arizona). At 7 to 7.5 cm, it is the smallest bird known to have occurred in North America north of Mexico.