| shrewd alliances: mixed foraging associations between treeshrews, greater racket-tailed drongos and sparrowhawks on great nicobar island, india. | mixed-species foraging associations may form to enhance feeding success or to avoid predators. we report the costs and consequences of an unusual foraging association between an endemic foliage gleaning tupaid (nicobar treeshrew tupaia nicobarica) and two species of birds; one an insectivorous commensal (greater racket-tailed drongo dicrurus paradiseus) and the other a diurnal raptor and potential predator (accipiter sp.). in an alliance driven, and perhaps engineered, by drongos, these species ... | 2010 | 20007167 |