Insane World

There are 50 billion wild birds in the world and four species dominate

There are at least 50 billion individual wild birds in the world, according to a new study. House sparrows alone make up about 1.6 billion of these. Three other species – European starlings, barn swallows and ring-billed gulls also have a population exceeding one billion birds. However, one in ten bird species are rare with fewer than […]