The second brood of Barn swallows (Hirundo rustica) just fledged from the nest. So they probably still need to be close to each other to feel safe. At their hungry voices in this way are louder for parents as well) Bank of Nioman river in Hrodna city, W Belarus Several pictures and description in Belarusian are here: Фота-гісторыя з некалькіх здымкаў і апісанне па-беларуску тут:
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