So, with her clutch complete, our female falcon has begun the long period of incubation.
This will last some 30 days or just over before the first egg begins to hatch.
So we expect and hope for our first chick to appear around or just after Easter.
Meanwhile, Dave Farmer has been taking some great photos of our pair from the ground below the tower and these show the features which allow us to distinguish the male from the female.
The male, as in all peregrines, is smaller and lighter in weight than the female who is the dominant of the pair. However, size is not easy to determine - unless the pair are together.
The male's upper chest is an off-white colour but, most importantly has NO vertical streaks on it. He also has a dark metal ring on his left leg though this doesn't always show in photos or on the web cams.
And here is the female - those upper breast stripes show really clearly!
The female shows here stripy upper breast feathers - photo Dave Farmer (gdfotos.co.uk)
And here is a composite photos showing the male and the female together - you should now be able to tell the one from t'other!
Photo: Dave Farmer (gdfotos.co.uk)