A check of the video recorder showed that all four eggs have now hatched. Peregrines begin incubation on laying the penultimate egg – in this case, the third – which explains why the first three eggs hatched within 24 hours of each other. The eggs were laid at intervals of two and a half days, so the fourth egg was on cue when it hatched two days after the third egg. Luckily, we recorded some footage as the chick struggled to break out.
The following morning, we saw the female feeding all four of the chicks. The newest chick is furthest from the camera.