09 April 2015 – Boise Peregrines


PFund-GraphicIt is always interesting to watch the incubating sequence. The adults seem to know exactly when to turn the eggs; when to cool them down and when to warm them more. At some point in time, they will start to “talk” to the eggs, probably the start of the hatching process, which may take several hours.
In these screen captures, which are used by permission, we see a sequence of “cooling” the eggs down, and then eventually, returning the one egg to the brood patch to keep it warm. Enjoy the photos in the sequence and Keep Looking Up!

At 1201 today, I noticed that one of the four eggs was laying outside of the warmth of the brood patch. The egg is visible here.

At 1201 today, I noticed that one of the four eggs was laying outside of the warmth of the brood patch. The egg is visible here.

At 1206 the one egg was still visible, approximately 5 minutes at 54 degrees F.

At 1206 the one egg was still visible, approximately 5 minutes at 54 degrees F.

At 1208, the tiercel places the exposed egg back into the brood patch. Interesting. He also re-arranged the scrape.

At 1208, the tiercel places the exposed egg back into the brood patch. Interesting. He also re-arranged the scrape.

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