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The Pigeon Patrol continues to operate in London. Tiny sensors are fixed on the paws of birds, which determine the levels of nitrogen dioxide and ozone in the air. Moreover, according to one of the studies, harmful impurities annually kill up to 9 thousand people.
KEEP IN MIND
The genus of pigeons includes 35 species, 2 of which are extinct. Among them, the pigeon-dodo or dodo, which lived in Mauritius and on the Mascarene Islands. He had no natural enemies, did not fly, did not swim and run well, so hunting for him was not difficult. In growth, he reached a meter, built nests on the ground and laid one egg.
