Air pirouettes of bird’s packs


In the city of Portland that in the State of Oregon, in the northwest of the USA, there is a school with not used boiler room with a high pipe long ago. She was chosen under гнездовья by martins. To video – the pack of martins comes back from feeding, to nests in a pipe. Locals are going to look at it, as at an attraction.


Sometimes birds of prey use it. They arrive on a pipe in advance and wait the coming-back pack of martins there.

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