Lastly Dr Garamszegi and his team placed traps within the nesting boxes and monitored which birds were caught.

ECONOMIST: Animal personalities

Because peregrine falcons don't build nests but lay their eggs on a flat surface, officials with the Port Authority of New York and New Jersey started protecting the eggs several years ago by building nesting boxes on the George Washington and the other bridges the authority operates.

WSJ: 4 falcon chicks living on NY-NJ bridge are banded

Ternovskiy was supposed to show foreign tourists around the shop, pulling various nesting dolls, lacquered boxes, and kitschy Soviet paraphernalia from the bright vitrines.

NEWYORKER: Roulette Russian

Chris Sperring from the Hawk and Owl Trust said the loss of traditional nesting sites meant about four out of five barn owl pairs now bred in boxes.

BBC: Barn owl at a farm