I guess its not over until its over, right? Egg 4 arrived April 15 approx. 9:45p local time.
So arrival dates are:
April 8 (earliest detected 7:45am)
April 10 1:55pm
April 13 (earliest detected 7:28am)
April 15 9:45pm
Hatch dates should be the second week of May based on 29-32 gestation from last egg appearing. That's May 14 to 18.
Video credit goes to, of course, Mary Anne of BCAW. (http://www.peregrinefalcon-bcaw.net/viewtopic.php?f=334&t=1671&start=60>