A prairie dance
A cooing, humming sound hangs over the Hamden Slough prairie like the blanket of fog nearly every April morning.
A farmer's implement? A pump endlessly moving water?
Try the Greater Prairie Chicken looking for a mate.
According to former Hamden Slough National Wildlife Refuge manager Mike Murphy, the cooing sound is a low frequency call that could possibly be heard for miles by other prairie chickens.
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