Dorothy laid her fourth egg last night at 9:20pm (exact time on March 21 is thanks to the sharp eyes of Pittsburgh Falconuts).

Here, E2 is about to leave the nest after relieving Dorothy this morning.  He’s looking up because she’s perched above him on the building.  I saw her there from Forbes Avenue at the time.

And here’s Dorothy’s video from @PittPeregrines:

And today.. a quiz!  See this link:  Who are the falcons’ nearest relatives?

(photo from the National Aviary falconcam at the University of Pittsburgh)