832-401299 - European green woodpecker (Picus viridis), male at nest hole feeding the young, Biosphere Reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe
832-401298 - European green woodpecker (Picus viridis), male at nest hole feeding the young, Biosphere Reserve, Swabian Alb, Baden-Wuerttemberg, Germany, Europe
832-390538 - Blue tit (Cyanistes caeruleus) looking out of the entrance hole of the breeding cavity, Moenchbruch nature reserve, Moerfelden, Hesse, Germany, Europe