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First Day on the Pitt Peregrine Nest, 2022

By 7pm on Hatch Day: Morela + 3 chicks + 4th egg hatching, 26 April 2022 (photo from the National Aviary snapshot camera)

27 April 2022

Yesterday was an exciting day at the Cathedral of Learning peregrine nest. Three eggs hatched between midnight and 2:30pm and the fourth egg had a visible crack by 7:00pm (photo above). This morning I expect to see four chicks and only one egg remaining to hatch.

Glimpses of the tiny nestlings have been brief because Morela often stands in front of the streaming camera while she feeds them. The best views are from the snapshot camera but those are only still shots so I collected images from yesterday’s 4pm feeding and made them into a video. You’ll notice that Morela eats a little bit before she starts to feed the young.

Scattered eggshells? Are you wondering about the scattered eggshells on the gravel?

When a peregrine egg is hatching the mother bird does not help the chick open the egg but when it has emerged on its own the mother carefully lifts the discarded shell and sets it away from the scrape (the shallow bowl where the chicks and eggs reside). The photo above shows many discarded shell fragments.

  • The shells are made of calcium carbonate deposited by the mother’s body.
  • The color of peregrine eggs is embedded in the calcium. The color does not wash away but it is only on the surface. As you can see, the shells are white inside.
  • Eggshells move around the gravel as the adult birds sweep in and out of the nest.
  • The mother bird eventually eats the discarded shells to restore her calcium levels. Morela is eating a shell in the snapshot below.
Morela eats an eggshell, 26 April 2022, 8:18am (photo from the National Aviary snapshot camera)

What about the 5th egg? My guess on hatch date for the 5th egg is 3 May but I could be very wrong. I was right about Hatch Day (26 April) but wrong about the 4th egg (It will hatch on the night of 26-27 April, not on 28 April). We’ll just have to wait and see.

Watch the Pitt peregrine family on the National Aviary falconcam at Univ of Pittsburgh.

(photos from the National Aviary falconcam at Univ of Pittsburgh)

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