Many, if not most, birds migrate in flocks. For larger birds, flying in flocks reduces the energy cost. Geese in a V-formation may conserve 12–20% of the energy they would need to fly alone. Red knots Calidris canutus and dunlins Calidris alpina were found in radar studies to fly 5 km/h (3.1 mph) faster in flocks than when they were flying alone.
Many , if not most , birds migrate in flocks . For larger birds , flying in flocks reduces the energy cost . Geese in a V - formation may conserve 12–20 % of the energy they would need to fly alone . Red knots Calidris canutus and dunlins Calidris alpina were found in radar studies to fly 5 km / h ( 3.1 mph ) faster in flocks than when they were flying alone .
How much energy do geese conserve flying in a flock?
How much energy do geese conserve flying in a flock ?
12–20%
12–20%