2cy May. The longest T is moulted post-juvenile (note the contrast to the juvenile shorter two TT and the juvenile SS, being darker brownish-grey and of better quality with fresher edges. Most young birds do not include TT in the post-juvenile moult, but renewal of singel (or all) TT are not rare (and birds with more extensive post-juvenile moult may even include single SS). Additionally, birds with post-juvenile TT can often also be sexed (se Sexing-chapter). [CP45262]