In Noord-Amerika gaat de boerenzwal

In Noord-Amerika gaat de boerenzwaluw vaak een samenwerkingsverband aan met visarenden en bouwt daartoe zijn nest onder het nest van deze vis etende roofvogel, de visarend zal eventuele belagers van de boerenzwaluw afschrikken, terwijl de boerenzwaluw op zijn beurt zijn waarschuwingsroep zal laten horen wanneer roofdieren het op de jongen van de visarend gemunt hebben, wanneer een nest wordt genaderd vertoont de boerenzwaluw zeer agressief gedrag en valt vrijwel altijd aan, ongeacht de grootte van de belager

Resultaten (Engels) 1:

In North America, the barn swallow is often a partnership with Ospreys and builds to its nest under the nest of this fish-eating bird of prey, the Osprey will deter any herbivores of the barn swallow, while the barn swallow in turn are warning cry will be heard when the predators on the boy of the Osprey have coined, when a nest is approached, the barn swallow very aggressive behavior and is almost always to regardless of the size of the assailant

Resultaten (Engels) 2:

In North America, the barn swallow is often a partnership with ospreys and purpose builds its nest under the nest of these fish-eating bird of prey, the osprey will deter potential attackers from the barn, while the swallow in turn will make its warning call when predators have on the young osprey coined when a nest is approached the barn very aggressive behavior and almost always fall shows, regardless of the size of the attacker

Resultaten (Engels) 3:

in north america the boerenzwaluw often a partnership with eagles and builds this nest under the nest of this fish eating bird of prey, the osprey will any of the boerenzwaluw deter predators, while the boerenzwaluw in turn waarschuwingsroep will hear when predators on the boy of the osprey nest is a target, when from the boerenzwaluw exhibits very aggressive behavior and is almost always, regardless of the size of the attacker