The incubation period is approximately 30 days.

Everything happens about a week later than usual.

- Before the years we have had a stationary couple in the silo but this year the female was alone and needed to find a male.

They simply got started later.

It is not very easy to get a glimpse of the eggs, even via the camera in the box, says Johan Karlsson.

Filmed with a webcam

Via a webcam that streams live around the clock all year round, you can follow the peregrine falcons that live up in the box at the silo in Västerås.

This is what it has looked like in previous years.

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See when the peregrine falcons grow up in the middle of central Västerås Photo: The pilgrim camera in Västerås