Apr 22 2009
The lady bird in this picture is keeping a secret she won’t tell any of us. When will her eggs hatch?
Based on our best guess we predicted they would hatch on or after April 19th because the normal incubation period for peregrine falcon eggs is 33-35 days. What we guessed was that she started incubation after she laid her third egg. Well, maybe she didn’t start until her fourth egg so I got out my calculator and was going to tell you a new date – but I thought better of it.
I had my heart set on April 19th and was prepared to wait until April 20th, but now I’m getting really impatient. The worst of it is that I got your hopes up too. No way am I going to predict a new hatch date!
Sigh. We’ll just have to wait.
(photo from the National Aviary webcam at Gulf Tower, Pittsburgh)