Meet the Swan family! Mr Swan (the Cob) ….. ….. Mrs Swan (the Pen). The large ‘growths’ at the base of the beak are known as the Basal knob, usually larger on the Cob and often increasing in size during the breeding season.….. ….. and the youngsters. In ten weeks all eight have grown fast, have avoided the early dangers and are becoming more independent. As they grow they are now developing white feathers. The Lapwings in the foreground seem unimpressed!