Common swift foodball in Stockholm, Sweden (1 Viewer)

[yapaco]

I am studying the swifts around the building where I live in central Stockholm, Sweden. Usually swifts leave us around August 15-25, and already there are fewer swifts around. Today I managed to get a photo of an adult bird with a foodball in its throat. I would expect that to mean that it is still feeding its chicks that haven't yet left the nest. Is that a correct conclusion?

 

[Joern Lehmhus]

I´d say so. Here in northern Germany we also have some pairs doing a second brood, still active at the nests . The majority seems to have left though...