How old are we?

Back to the Data Centre today for another look. Ivanhoe was perched on the nest ledge, watching over his little family, while Rowena soared overhead, tracing in big circles in the sky.

The chicks were visible and active, and at least two were stretching their wings, affording decent views of their feather development. In the first photo, the underside of the wing reveals flight feathers emerging from their shafts. This is consistent with day 22, at least according to the Peregrine Falcon age guide I have in my hands.

The second photo is a puzzler — it’s either a younger chick with no wing feathers yet visible, or I’m looking at it all wrong. The chicks’ faces in the last photo are about right for 20-22 days, but I welcome other, more expert, opinions on their age.

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