7/19/2021 :: Upcoming Dispersal
The next stage in the lives of Green and Yellow is their upcoming dispersal when they will leave the ledge on the Rachel Carson State Office Building (RCSOB). Biologists know very little about the time between when birds leave their natal territories (where they were born) and when they settle on their winter grounds. Although information on dispersal is lacking, it is believed to be a critical time packed with learning and exploration when birds become self-sufficient and look for future breeding locations. What biologists do know is that female peregrine falcons typically disperse farther from the area where they hatched to breeding sites than males. In the Midwest, females dispersed an average of 200 to 214 miles while males dispersed an average of 108 to 109 miles. Females in New England dispersed from 39 to 485 miles. Researchers Barclay and Cade reported that wild and hacked peregrine falcons dispersed from 0 to 2,613 miles in the eastern United States. On average, wild and hacked females dispersed 220.3 miles and wild and hacked males dispersed 193.0 miles. Only 7% of wild and hacked birds recovered in the eastern United States moved distances over 500 miles after leaving their natal territory. Green and Yellow should disperse in August or September and begin the next stage of their life.
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2 comments:
I love my tennis ball and it looks like you love yours too, Willow.
Lulu: "Ooh, a ball! Does it squeak? I hope it squeaks!"
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