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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.) |
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Operation RubyThroat is a registered trademark of Bill Hilton Jr. and Hilton Pond Center for Piedmont Natural History in York, South Carolina USA, phone (803) 684-5852. Contents of the overall project and this website--including photos--may NOT be duplicated, modified, or used in any way except with the express written permission of the author. To obtain permission or for further assistance on accessing this website, contact Webmaster. |