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If We Can Rock Together, We Can Flock Together

10,000 Birds

Des Lacs National Wildlife Refuge, North Dakota. These Black-legged and Red-legged Kittiwakes only need to fear gulls and Peregrine Falcons , although bad weather and erosion do take their toll on nests. In the case of these Tricolored Blackbirds , they are formed for DEFENSE. Flocks are formed for many reasons.