Several years ago I began monitoring a pair of Peregrines nesting on Quarry Hill cliffs. On Friday I was fortunate to be watching during a food delivery and watched the female feed at least two very youg chicks. Because the eyrie is a shelf of sorts it is very difficult to see over the outer edge. When the chicks are a bit larger/taller it will be easier to count heads. The picture above are is 2009 and taken from the foot of the cliff.
My lens isn't powerful enough to capture a clear picture of the bird on the snag.