1cy October. The CC and innermost AL are post-juvenile (denser with brighter blue-grey gloss) in contrast to the two outermost AL that still are juvenile. Note however that 1cy often moult all three AL feathers. [2KR09053]
1cy October. The CC and innermost AL are post-juvenile (denser with brighter blue-grey gloss) in contrast to the two outermost AL that still are juvenile. Note however that 1cy often moult all three AL feathers. [2KR09053]