The incubation period for Peregrine Falcons is 29 to 33 days. Since continuous incubation began on April 15th, just before the laying of the 3rd egg, we calculated the “hatch window” to be between May 14th and May 17th. I think that we can safely add another day on the end of our window and include May 18th. Regardless, today may be the day when one of the Peregrine chicks begins to break through its shell. Whenever one of the parent birds moves, we need to watch for a hole appearing in one of the eggs. That will likely be the first sign that the young are arriving.
Sure hope so!
Looks like we will have to wait until tomorrow…Thanks for watching!!
I think that they were both in the nest this afternoon. It’s been only Ares most afternoons but Astrid was on the eggs today. CHL
You are quite right!! Astrid has been on the eggs much more in recent days as the hatching time draws closer. They were both in the box for a few minutes but they don’t spend much time together in the box and that is typical behavior. Thanks for watching!!