Cliff Swallows build jug-shaped nests by carrying beakfuls of mud from the nearest stream. Openings near the top keep young from falling out before they can fly. Colorado | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Steinberg, James |
Bildgröße: | 2820 px × 4063 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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