Whole flocks of birds might have to be culled if even a few get sick. (alephblog.com)
Instead, wildlife agencies used spring - loaded rocket nets to capture whole flocks and relocate them to a suitable turkey - free habitat. (newscientist.com)
In Costa Rica, Germany, Turkey and elsewhere, high - tech tags let researchers follow individuals and whole flocks through data beamed to the international space station. (nationalpost.com)