Lawrence Peregrines: Day 30!

June 3, 2019 in In the Nest Box, lawrence peregrines, Peregrine Falcons Eastern Massachusetts, Peregrine Falcons Massachusetts

This morning the Peregrines started the day under fair skies, wind from the west at 6 MPH, and the temp at 55F.  The forecast calls for sunny skies, with a high near 68. West wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Tonight, mostly cloudy during the early evening, then becoming clear, with a low around 47. West wind 6 to 13 mph, with gusts as high as 26 mph.

2019.0603.1It’s often around day 30 that the chicks seem to turn into “real” peregrines almost overnight, very rapidly losing much of the down on their breast, thus revealing the heavily streaked breast feathers they will be carrying for the next year. In this photo, the larger female chick had just been flapping and the darker feather colors, on the wings, back, and tail are very visible! Feather ruffling with body and head shaking is now marked and increasing time is spent in exercise, notably walking on the feet and wing-flapping.  The young are now better able to eject their droppings out of the nest box. They present their backs to the edge of the nest box, but are careful not to fall out, and have a fairly well developed sense of the gravitational hazard…..but sometimes, it is…….look out below!

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;