Best Selasphorus
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The Bumblebee Hummingbird (Selasphorus heloisa) is one of the smallest birds in the world, endemic to the highlands of Mexico, where it weighs approximately 2–2.4 grams.
The Rufous Hummingbird (Selasphorus rufus) undertakes one of the longest migrations relative to body size of any bird, traveling over 6,000 km from Mexico to breeding grounds in Alaska.
The Scintillant Hummingbird (Selasphorus scintilla) is the smallest bird in Costa Rica and one of the smallest in the world, endemic to the highlands of Costa Rica and western Panama.
The Calliope Hummingbird (Selasphorus calliope) is the smallest bird native to the United States and Canada, with adult males weighing roughly 2.5 grams.
The Wine-throated Hummingbird (Atthis ellioti) is a tiny montane species restricted to cloud forests of Guatemala and Honduras, closely related to the Bumblebee Hummingbird of Mexico.
The Volcano Hummingbird (Selasphorus flammula) is endemic to the high volcanic peaks of Costa Rica and Panama, with male gorget color varying geographically across different volcanoes.
Allen's Hummingbird (Selasphorus sasin) has a resident subspecies on the Channel Islands of California that does not migrate, distinguishing it from the migratory mainland population.
The Broad-tailed Hummingbird (Selasphorus platycercus) is a high-altitude specialist of Rocky Mountain meadows, where males produce a distinctive trilling wingbeat sound in flight.
