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Ospreys Migrating

email-osprey 014Adult female Ospreys begin their fall migration in August, before their young are completely independent. After females leave, males continue to feed this year’s young and don’t reach the peak of their migration until the middle of September. Ospreys tend to migrate during the day, except when crossing over large bodies of water, which they do at night. Unfortunately, the nocturnal flights of northeastern Ospreys over the Caribbean (a 25-hour nonstop flight) on their way to their wintering grounds in South America often coincides with the hurricane season. As treacherous as this is, 80 percent of adult Ospreys survive migration, according to the National Wildlife Federation.


6 responses

  1. Amazing! I’ve been so worried about them but those are good numbers.

    September 19, 2017 at 9:36 am

  2. Roseanne Saalfield

    It would be interesting to hear why females begin their migration before the males, or to hear your speculation about why that might be.It’s the obvious question that follows upon learning this interesting fact. Thanks

    September 19, 2017 at 9:38 am

  3. Why do they leave at different times do you think? Perhaps because the moms are tired from the rearing and so they might be weaker for the trip?

    September 19, 2017 at 9:40 am

    • Excellent question, and your reasoning sounds logical to me!

      September 19, 2017 at 9:58 am

  4. harriette griffin

    What happens to the young ones? Do they go with the males and then have to fly through the hurricane?

    September 19, 2017 at 3:12 pm

    • Juveniles migrate alone and follow the general routes taken by adults, with some exceptions. Research seems to indicate that they learn the “adult route” over the course of several migration cycles.

      September 19, 2017 at 5:09 pm

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