Twigged it

It's that time of year when the local Rooks start to tinker with nests. They are refurbishing last year's nests or else building new ones. Until now they've spent their days just messing about in the sky, so far as I can see.

There is a lot of ferrying to and fro with the essential stuff that makes a nest. In fact I have never succeeded in grabbing a classic "bird with big twig" picture, so this will have to do.

This is the point that I start to wonder how this works. Imagine you are a young Rook, and this is your first nest. Something drives you to go find your first twig, which you take to the very top of a hundred foot tree.

How do you get that first twig to stay there while you go and find another one. How do you join them together so they stay fixed to the tree? Bear in mind you don't have arms and hands, just a beak...

Perhaps that rhythmic taptaptap from the woodland is not Woodpeckers after all. Perhaps it is actually Rooks with their secret staple guns....