Friday, March 20, 2009

Peregrine Falcons Lay Egg

Peregrine Falcons Lay Egg Before Live Internet Camera


GORHAM, Maine, March 20, 2009—Biodiversity Research Institute’s biologists confirmed that at 1:30 p.m. a peregrine falcon laid an egg before the live BRI Peregrine Cam.


Editors/Reporters: See the peregrine pair live at For still shots to print, reply to or call (207) 839-7600, ext. 109.


“This is amazing,” says Senior Research Biologist Wing Goodale. “We have all been watching with bated breath for the last three days. I haven’t been getting much sleep.”


The BRI Peregrine Cam is a new live internet camera for Biodiversity Research Institute and adds to the eagles, ospreys, loons, and finches that BRI monitors. Both the eagle pairs appear to be close to nesting.


Viewers from around the world are chatting live and capturing every event on BRI’s online webcam community, This community site allows viewers to follow the events and post images and videos taken of nest activities. 


BRI webcams are at the forefront of innovation, giving biologists and the public a cutting-edge way to research wildlife.  BRI Peregrine Cam offers two views of the nest, one of which functions in full color in low-light conditions, providing an image 24 hours a day. 


“In Maine, breeding peregrine falcons are listed as a threatened species, with only 23 known pairs nesting in 2008,” said BioDiversity Research Institute’s Raptor Program Director Chris DeSorbo. “These webcams serve multiple purposes-—they can inform us about the causes of nest failures and they vastly increase people’s awareness of the many threats facing wildlife.”


To support global health, BRI conducts collaborative ecological research, assesses ecosystem health, promotes environmental awareness, and informs science based decision making.


BRI webcams are possible through collaboration and support from dedicated viewers, Bank of America, Kids in the Nest Educational Society, Nextera Energy, and the Maine Department of Inland Fisheries and Wildlife.


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  1. 3/20/09
    Unfortunately, I am unable to get live feed at work, so I periodically check the still feed. Was very excited to see she/he laying in the nest and then very, very excited to see the egg. How many eggs do they usually lay and do both parents share "sitting" duties as do the eagles?

    cathy h in mass

  2. I checked in about 1 p.m., she was all "settled" in, wished I could have seen her lay the egg, does anyone have it on film so we can all see it?
    I check in several times during the day, now, if the eagles will do the same! !
    Judy in Western Maine

  3. 03/20 @ 16:42

    Arrived home around 16:22 and found a falcon down in the nest. I am guessing it is the female.

    How wonderful to read that an egg has been observed!! I have been captivated by this pair ... yet another new experience thanks to BRI. Anxiously await more info re expected number of eggs, hatch date, fledge anticipation.

    Hopefully, our eagles will follow soon with families of their own.

    Thanks to BRI and all who post.

    JAM in IL

  4. 03/20 @ 17:11

    17:09 - falcon up and turning egg. Beautiful color!

    17:11 - up again. I was wrong in my earlier post ... this is the banded male. He is having a problem fully covering the egg. Once when he was down the egg slipped out under his beak. Then it was slighy visible in his "armpit" area.

    17:13 - Falcon left nest ... egg uncovered. I noticed that as the bird moved the egg, the egg would roll back to the center. Even when he started down with the egg between his feet, he was too slow to cover the rolling egg. Cannot check the other still without losing my post, so I do not know where the birds are at this point. I will try to watch to see how long the egg is left uncovered ... hopefully not too long.

    17:20 - falcon into nest and down on egg. Did not catch legs, don't know which bird. However, simply plunked down on top of it with no fuss.

    17:22 - once again up and then down onto egg. Still could not see legs to verify if banded.

    JAM in IL

  5. 03/20 @ 17:26

    Update - Female arrived. Male stood and they chattered before he left and female resumed incubating. I do not see any egg sticking out!

    Oh, my ...

    JAM in IL

  6. Been watching for some time now. Falcon left nest for several minutes. Now, I need someones help with what I saw. A falcon came to sit on the nest and another one came right after wards. A lot of squawking, then one of them left, was this 2 females, or was one a male? How do you tell the difference in the sexes?
    Judy in Western Maine

  7. Hey everyone! I am so excited to have caught this moment in a photo! I could only get one shot, but I thought it was great for size comparison. Look at that red egg!

    Lisa in OH

  8. 03/20 @ 17:33

    To Judy in Western Maine -

    I keep hoping that someone will verify. From what I have read, the female is larger (same with eagles) and after seeing the two falcons together, I feel that the banded falcon is the male. Just my opinion. I don't know if it is possible that there are more than two falcons at this nest. I am assuming the two that I saw were not the same sex. I did not catch the egg laying. Hopefully, we will get a definite answer from someone with far more experience than I.

    JAM in IL

  9. JAM & Judy -

    I, too, did some reading and every site I see says the female is larger. In the photo I have of both of the falcons, I believe the one on the left of my photo is the female. There is a considerable size difference that leaves almost no doubt that she is the female. Here is a link to the photo:

    Lisa in OH

  10. What a great photo you captured Lisa! Thanks for sharing.

    I agree that all the research that I have done says that the female is a third larger that the male. So I have been assuming that the smaller bird with the bands is the male and the larger bird without bands is the female.

    I also read that they lay 3-5 eggs. Can anyone out there confirm that we should see more eggs?

    Ann in ME

  11. Is there video of the egg laying? Thanks.

  12. we have been having a pair of falcons pearching and hunting from the drydock in Bath. We dont know where the nest is, so we been checking everyday to make sure its not on the dock. If we find the nest what should we do?

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