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November 25, 2005

Measuring Bill of Giant Petrel Chick

Biologist Heidi Geisz measures the bill length of a giant petrel chick. Scientists have been monitoring the giant petrel population near Palmer Station, Antarctica, since the 1970s.

The National Science Foundation-supported Palmer Long-Term Ecological Research Project (PAL LTER) monitors western Antarctic Peninsula ecosystems annually over a grid of oceanographic stations and seasonally at Palmer Station. Giant petrels lay one egg every year and nest on the same island with the same mate. Both males and females care for the egg and chick. They eat carrion, squid, fish, krill and baby penguin chicks.

The Antarctic Conservation Act (Public Law 95-541) formalizes U.S. adherence to all Antarctic Treaty conservation rules. Participants must obtain a permit to go into specially protected areas as well as to be in close proximity to wildlife. For more information on the Antarctic Conservation Act, visit http://www.nsf.gov/od/opp/antarct/aca/aca.jsp. (Date of Image: March 15, 2004)

Credit: Photo by Katy Jensen, National Science Foundation


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