It’s a fairly quiet period at the moment for our peregrines. Both parents have been spending their day sharing the incubation duty and apart from the odd moment where the question of comfort is raised, involving a shuffling and moving around to find a better position, and some gravel dragging to keep the nest in good shape, little else can be observed. If all goes to plan we’re still looking at a very early October hatching, based on the natural average 28 to 33 days incubation period.
A very concise and well-written book which we’ve been using as a reference for the duration was written by Derek Ratcliffe called “The Peregrine Falcon”, and can be sourced here …