About Labels

If you would like to see all the pictures of one type of bird select the LABLE below.

NOW! Over 350 diffuerent birds! See the new Sandhill Crane colts

See travel notes

Our trip to Discovery Cove & Orlando, FL2016 is now posted

and more to come (Click photos to enlarge)


Apr 27, 2010

Hummingbird (Costa)

female
A desert hummingbird, Costa's Hummingbird breeds in the Sonora and Mojave Deserts of California and Arizona. It departs the desert in the hottest days of summer, moving to chaparral, scrub, or woodland habitat.
 male colour change with the lighting

Researchers have found that Costa's Hummingbird can enter a torpid state, with slowed heart rates and reduced body temperatures, under low ambient night-time temperatures.

Juvinile

The hearts of torpid Costa's Hummingbirds beat about 50 times per minute, while those of non-torpid resting Costa's Hummingbirds beat 500 to 900 times per minute.

Photographed in Phoenix & Tucson, AZ
Labels: ,

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)