Lawrence Peregrines: Day 10

May 14, 2019 in In the Nest Box, lawrence peregrines

The forecast today calls for showers likely with patchy drizzle before 10am, then patchy drizzle with a chance of showers between 10am and 1pm, then a chance of showers after 1pm. Cloudy, with a high near 44. Northeast wind around 9 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Tonight, a chance of showers, mainly after 11pm. Cloudy, with a low around 38. North wind 5 to 7 mph. Again, the chicks are out of direct wind!

2019.LP.0515.1Just before 6 AM, the female was seen in the nest box preening, wind stretching, and watching over the little ones.  She departed and returned moments later, again with food in her talons. The hungry chicks were happy to receive a morning meal.  The egg has been moved back into the huddle!  After the feeding session, the female now may move to the perch outside the box for a while, and then hop back inside the nest box.

By day 10, the chicks have already grown visibly, but remain covered in white down with pink patches of skin still showing through in some areas. Around this time, the young peregrines grow a second coat of down. From this age onwards, nestlings become more active and strong though the nature of their movements does not change markedly for another week or so. They are brooded less and less during the day and become more vigorous in their movements about the nest box, including backing up to squirt their feces outside the nest box. Vision develops strongly and the young, when hungry, scream and clamber towards an arrived parent. Most of the day is spent sleeping, up to about 16 days, but the comfort movements, become more developed, and include foot nibbling and hitching of the wings into adult position.

Literature cited:

Ratcliffe, D. 1993. The Peregrine Falcon. 2nd ed. Carlton, England: T. and A. D. Poyser.

The Canadian Peregrine Foundation, Peregrine Falcon Development – Age Guide;

Peregrine Falcon: Woburn 2014 hatch year breeding adult male in RI

August 18, 2016 in Peregrine Falcon Woburn

falcons2016-sakonnet2A wonderful report and documenting photos just in from Peter Green in Providence RI on one of the 2014 hatch year peregrine falcon chicks from Woburn, MA:

RI-DOT (Dept of Transportation) was recently inspecting the old Sakonnet River Bridge when they spotted the falcons and gave me the tip. They were able to read the “44” on the band and I got the “BD” so together we pieced together “44/BD” and I knew it must have been banded by Tom French because he uses green/black with the letters BD. There is already a new bridge up and being used, this old bridge will be torn down in 2017 and the falcons will need to relocate.

Peter Green is a very talented bird and wildlife photographer in Providence, RI with a keen interest in urban raptors. You are encouraged to check out his amazing work on his website and feel free to look at his impressive list of select exhibits and presentations!

Here is more info from Tom French:

falcons2016-sakonnet1“This is the latest I have ever heard for unfledged Peregrine chicks. These chicks appear to be about six weeks old, so they would have hatched around June 24, and the eggs would have been laid about May 22. I have never heard of Peregrines raising two broods in a single season, so I expect this was the result of re-nesting after losing the first clutch of eggs. From my experience, recycling takes about 2 weeks, so the first clutch would have been lost about May 8. I have had first clutches completed at least as late as April 19, so the clutch might have been about 2 ½ weeks old. If the clutch was much older when lost, I don’t think the female would re-lay. So, the dates potentially work for a lost first clutch, and a successful second.”

And finally, thanks to Tom French, here is the original banding information for Peregrine Falcon 44/BD:

Band numbers: 1156-19120, and 44/BD black over green
Banding date and location: 06-24-14, MA, Middlesex Co., Woburn, on a long-abandoned quarry wall, behind an industrial park.
Sex: Male
Siblings: Two, 1 male (45/BD), 1 female (75/BD).

Other reports after fledging: On October 5, 2014, he was identified on the beach at the south tip of Gooseberry Neck, Westport, Bristol Co., MA by Mark Lynch of Worcester.
Your report: Nesting on the Sakonnet Bridge, 0.9 miles north of Tiverton, Newport Co., RI. Band number confirmed 08-05-16.