1 April 2022, April Fool’s Day
During the nesting season female peregrines typically lay one egg every two+ days. Though the interval is not exact, we were sure Morela’s clutch was complete when she began incubation after egg #3, laid egg #4, and did not lay another. We were surprised when Kim Getz saw five eggs yesterday afternoon. She sent me a snapshot. Oh my!
When did the fifth egg show up? Almost five days after the fourth.
- First egg: 3/18/2022, 08:31am
- Second egg: 3/20/2022, 20:09 = 2.5 days later
- Third egg: 3/23/2022, 04:40 = 2.4 days later … began incubation
- Fourth egg: 3/26/2022, 06:32 = 3.1 days later
- Fifth egg: 3/30/2022, 19:08 = 4.5 days later
It is a very odd looking egg. One side is the normal reddish color while the other is white. Did her Morela’s body not lay down pigment on one side? Very odd.
The delayed fifth egg will make for a long hatch period. The first three eggs, incubated equally, will hatch on the same day. The fourth will probably hatch 2-3 days later, matching its appearance after incubation began. The fifth will probably hatch a week after the first three.
It’s going to be an interesting year. No fooling.
(photos and video from the National Aviary falconcam at Univ of Pittsburgh)