home: www.rubythroat.org |
|
Photo by Bruce Fall © Operation RubyThroat |
These museum study skins of Ruby-throated Hummingbirds (A. colubris) are quite valuable in understanding bird development. The specimens dramatically demonstrate the increase in size from a naked, day-old 2.5cm chick (far left) to the adult male (far right). By day three, the chick has doubled in overall size, and almost doubled again by day five. (The large, numbered increments on the scale at left are 1.0cm marks.) |
Make direct donations on-line through
Network for Good: |
![]() |
LIKE TO SHOP ON-LINE?
Donate a portion of your purchase price from 500+ top on-line stores via iGive: |
|
Use your PayPal account
to make direct donations: |
|
Back to Hummingbird Questions & Answers
Up to Top of Page
|
Share Your Hummingbird Experiences Through "Hummingbird Hobnob" |
![]() |
Operation |
|