I have come across several Woodpigeon families in the last week. August and September are peak season for Woodpigeon fledglings. One or both adults will accompany, and occasionally feed the young for a week or two. The fledglings look nervous and follow each other or their parents, feeding on the ground. After the adults leave them to their devices, the usually two siblings will move together or join other juveniles.
In these photos, you can see the differences between the juveniles and the adult at the background. Juveniles are much smaller, they lack of white patch on the neck (but not the striated neck feathers), the beak is a dull grey and their eyes are dark.