Posted by: badbirdz2 | March 30, 2007 @ 10:30 am

Big push out of Cuba

A very interesting night indeed! If you checked the wind profile for the Key West radar last night, you would have noticed that at almost all altitudes the winds were from the Northeast. Only between 800 and 900mb (which translates to roughly 2500 feet above the earth’s surface- the altitude at which the bulk of passerines tend the migrate) were winds out of the Southeast. How does that phrase go? “the proof is in the migration?” Anyway, check out the loop from sunset last night through 6:00AM this morning….the biggest push of migrants out of Cuba this year, and only the second large movement since March 15th. As for birding conditions, the winds were still out of the east/northeast as the birds crossed the straits, and birds appear to have been pushed towards the west. There is no obvious weather causing birds to land, so it’s conceivable that many continued past the Keys and headed into the Gulf. Since winds were not optimal for northbound migration, it’s also conceivable that many birds took to land both in the Keys, southwestern Everglades National Park, and eventually the south and central west-coast of Florida.

Frames are every 1/2 hour:
Base Reflectivity image from Fort DixBase Velocity image from Fort Dix

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Responses

  1. David, they either passed over or didn’t get this far – very slow at Ft. D. this morning. Will be watching your site as migration progresses. Thanks for keeping this going.

  2. Hi David,
    Spend an hour at Sugden Park in East Naples Fl. between 1and 2pm.
    In a group of oaks I had 1 Yellowthroated, 1 N. Parula, 2 Black and White,
    and 6 Prairie Warblers. Had 2 Yellowrumps and several Palm Warblers still Present. On Wednesday I had in the same trees only 1 Black and White and 1 Prairie Warbler present Prairies seem to be in last nights flights.

    Thanks for the reports

    Kenneth P. Williams
    Naples Fl.

  3. Thanks Margie and Kenneth; your comments are a great asset to this site and everyone using it. It’s going to take me a little while to determine how large a flight is necessary to “pick up” on the ground. Of course, so many variables go into birds landing that my forecasts will always be contingent on one thing or another. Please keep posting as long as you’re out in the field, and hopefully the collaborative effort will lead to more accurate predictions.

    Good Birding

    David


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