The red knot is similar in appearance to a few other species inhabiting the IRL and surrounding areas, including: two species of dowitcher belong to the genus Limnodromus; the sanderling, Calidris alba; and the black-bellied plover, Pluvialis squatarola (Paulson 2005). Both species of dowitcher occurring locally have longer bills than the red knot, generally grayer back coloration, duller red underparts, and smaller white markings on the underparts. Sanderlings are much smaller and black-bellied plovers are larger than C. canutus rufa. Flight Patterns & Locomotion: While in flight, red knots form close flocks with a uniform twisting motion that reveals their gray backs followed by the red of their breasts. Flight speeds of some individuals have been recorded up to 38 mph (Terres 1980).
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