Patiently waiting

The magpie nest is in a tree just off to the right of this picture. 
On 4th April I blipped a photo of one of them adding some material to it during the construction. According to the RSPB hand book of Scottish Birds, the female incubates 5 or 6 eggs for about 20 days. 
I reckon that if the eggs successfully hatch it should be happening any day now.