Foraging by a Red-tailed Hawk along a Wetland Edge: How Large a Duck can be Captured?

  title={Foraging by a Red-tailed Hawk along a Wetland Edge: How Large a Duck can be Captured?},
  author={J. Jehl},
  • J. Jehl
  • Published 1 December 2004
  • Biology
Abstract A Red-tailed Hawk (Buteo jamaicensis; estimated mass 1,000–1,200 g) failed to kill a Red-breasted Merganser (Mergus serrator; estimated mass 1,150 g) that it captured in shallow water (<25 cm), but evidently dispatched a starving Red-necked Grebe (Podiceps grisegena; mass 645–660 g). These observations are pertinent to estimating the upper mass limit for successful foraging in water. 
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