They have white spots on their head and on their back and a v
Fledglings are brown with white wing tips. They have white spots on their head and on their back and a v shaped white area underneath.[8] The plumage of one year olds can be almost completely brown. In the second year the birds’ appearance changes depending on the different phases of moulting: they can have adult plumage at the front and continue to be brown at the rear.[9] They gradually acquire more white in subsequent seasons until they reach maturity [...]
