Falcon Nest

View webcam images of falcons nesting and caring for young - typically March through July.

Background

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Though not the only reason for their decline, the pesticide DDT had passed through the food chain and weakened the shells of peregrine eggs, leading to the loss of many young before they could hatch.

The curtailment of chemical pesticides and the success of nest boxes like ours have led to an impressive recovery of the peregrine falcon population.

You can watch our falcons during nesting season, typically March through July, by checking images from our webcam at the bottom of this page.

Current News: 

10-16-18:  2018 Falcon Report has been posted.

7-16-18:  The falcon chicks have fledged.  One was grounded this morning, but was returned to the nest.  They will be practicing flying back and forth to the nest for a while yet.    

7/3/18:  They will be ready to fly in about 3 weeks. 

6/27/18:  Falcon Banding.  Skye, Hunter, Chase  Triplets

 

6-8-18: And then there were three! 

 

6-6-18:  First Hatchling! Right on time.   First Hatchling

5-11-18: 

Based on the egg-laying sequence, we’re looking at estimated hatch dates of June 7-9.
 
With an immature female, fertility of the eggs is questionable. I’ve seen young females whose eggs did not hatch, I’ve seen some cases where only one hatched, but I’ve also seen a case where all 3 hatched, so we’ll have to wait and see what happens.
 
Given the fact that this young female beat out 2 adult females for the site, I’m remaining optimistic! - Greg Septon 5-11-18

 

May 5th:  3rd Falcon Egg. 

May 4th:   2nd Falcon Egg!

Right on time! 

May 1, 2018:    First Falcon Egg Laid at the Thermal Plant! 

(Invictus apparently didn't stay! The young female won out.) 

From the biologist:
"The first egg was laid overnight - see below. With your female as a juvenile we’ll have to see how she does. Peregrines don’t normally nest until they are 2-3 years of age. However, over the past 30+ years I’ve seen a few instances where young females actually did well. Back in the early 1990s at the Port Washington Power Plant an immature female laid 3 eggs and all 3 hatched and successfully fledged. This was quite unusual but the fact it happened means it can and does.

Hopefully we’ll see at least couple more eggs here. Peregrines lay an egg every other day, so IF she’s going to lay more we should see the 2nd egg on Thursday." - Greg Septon

April 27, 2018:  Greg Septon observed that the young unbanded female peregrine appears to be holding her ground and is the only female he's seen at the nest box since the last report.  The latest image shows the adult male and the young female displaying to each other inside the nest box which is a promising sign. 

April 12, 2018:  "Asa", the past resident male falcon, has returned to the nest.  An unbanded immature female as well as a mature female (unbanded) have been seen harrassing each other with Asa attempting to attract one into the nesting box.  Territorial fighting is known to happen when a resident female is lost. 

It appears "Invictus" (an adult female) has won the spot. 

Adult Male "Asa" (b/r) 17/M - produced in 2013 at the UW-Milwaukee EMS building nest site in Milwaukee, WI.  He was banded as a nestling on 6/3 that year.  This will be his 4th year at the Thermal plant.

Adult Female "Invictus" (B/Blue) 08/H - produced in 2015 at the Georgia Pacific paper mill nest site in Green Bay, Wi.  She was banded as a nestling on 5/27 that year.  This is her first year at the MRMC Thermal plant.  

Typically, a new female will lay eggs later rather than sooner in the season.  Greg Septon reports there are eggs presently at 19 nest sites in the area.

March 6, 2018:  The falcon family most recently resident atop the Watertown Plank Thermal Plant has lost its female falcon, Tahoe (pictured flying above).  "Tahoe" has been the resident female for the last four years (2013-2017), successfully nesting 14 young.  Greg Septon informed us that two of her young have been spotted nesting: a male at Port Washington and a female at UW-Green Bay.

Tahoe exhibited some past injuries which may have weakened her; it appears she may have lost a territorial battle on March 4th.   It's likely she will be replaced by a new female.  A new nest box is in place at the thermal plant and peregrines have been observed in the area.  It is unknown if Asa (the male for the last three years) will return.  First-time nesters are likely to nest later in the season. 

REPORTS

Click above right to read the most recent Falconwatch Report.  Our nest is reviewed on page 16 of the 2018 report.

FACEBOOK   News & pictures also will appear on the MRMC Facebook page "Milwaukee Regional Medical Center."

WEBCAM

Note that the webcam image below is not a streaming image but does refresh every 60 seconds.  We recommend refreshing your screen to capture ongoing views.

 

Falcon's Nest'