What is it

I found this on the back doorstep this morning. Don't know how it got there. Maybe a bird dropped it
Does anyone know what it is?
I managed to get my two pieces of wood cut. The son of Don's cousin cut them forme and also took down the old bits and put the new bits up. He also changed my water filter when he saw how brown it was.
I potted up the four containers I had painted the other day and put lupins in them and the I will add some French marigold round the edge.