Hummingbird sketch in black and white
Hummingbird in colourful sketch

Hummingbirds in the Rocky Mountains: Species, Altitude, and Gardening

Rocky Mountain scene

In the Rockies, hummingbird season is short, intense, and governed almost entirely by altitude. Birds arrive late, breed fast, and leave early, squeezing an entire nesting cycle into the brief window when high-country meadows are in flower. They do it in a place where the temperature can drop below freezing on a July night.