Calgary volunteers track building strikes by migrating birds

CALGARY — Each year tens of millions of songbirds migrate over Alberta on their way to warmer places, but not all make the journey safely, with many flying into buildings, injuring or killing themselves in the process. Since the beginning of Septemeber, a group of nearly 40 volunteers from the Calgary Migratory Species Response Team has been patrolling a downtown circuit, gathering data on where birds are colliding with buildings. The migration has now tapered off significantly but the gro