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| Male Female; Percentage of Male-Female Chicks | |
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| Tweet Topic Started: Apr 11 2009, 05:29 PM (475 Views) | |
| harpo516 | Apr 11 2009, 05:29 PM Post #1 |
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Advanced Member
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have you noticed in your studies, if more females are hatched per year or more males? would that ratio make a big difference in the repopulation or maintaining the population? is it more likely for males to return to their home nesting area or is it about 50/50? just wondering....... |
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| Eagle Guy | Apr 13 2009, 09:15 AM Post #2 |
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Advanced Member
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For birds that we recorded the sex, there have been 31 males and 22 females fostered or hatched on Catalina since 2000. I think in the long run it is close to a 50:50 sex ratio. They also seem to have about the same return rate to their general natal area (within 200 miles of where they fledged). |
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4:56 PM Jul 10