Sandhill Cranes are omnivorous. They feed on grains, berries, small reptiles, invertebrates, aquatic plants, and more. They will feed on nestling birds, if the opportunity arises.
At Rollins Savanna last month I observed a small group of Sandhill Cranes foraging in a marshy area. A male Red-winged Blackbird was giving them a hard time, dive-bombing and attacking the backs of the large birds.
The blackbird may have thought the cranes were up to no good, but during my stay I didn’t see the cranes discover any tasty nestlings. The blackbird eventually left the cranes alone.
This wasn’t the first time I’d seen a blackbird attacking cranes at Rollins Savanna. Back in June 2009 I saw a small mob working together to drive away a pair of cranes.