The Egyptian Goose is not strictly a goose but a shelduck. Originally from Africa, mainly from Egypt, it now has established feral populations in several European countries including the UK.

There is a prominent brown spot on the breast

Size comparison with Canada goose and Mallard

If there is a god . . .

Like the related Ruddy Shelduck, the female often has a lighter head than the male

Courtship (photos from some distance away)

Close to, the body feathers have delicate wavy lines (vermiculated)

The white, green and black wing (like the Ruddy Shelduck) shows in flight

The London telecomms tower

Link to the similar Ruddy Shelduck