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Ridgway's Hawk Buteo ridgwayi

  • Order: Accipitriformes
  • Family: Accipitridae
  • Monotypic
  • Authors: David L. Anderson, Russell Thorstrom, Christine D. Hayes, and Thomas Hayes
Sections

Diet and Foraging

Diet

A quantitative description of diet for Ridgway’s Hawk is provided by Woolaver et al. (2013) who described provisioning behavior from a sample of 22 nests in Los Haitises National Park. Ridgway’s Hawk feeds on a diverse array of prey including reptiles, small mammals, birds, and arthropods. Although prey diversity in nests was high, lizards and snakes dominated the diet in terms of both frequency (65.5% and 14.4%, respectively), and biomass (50.4% and 18.1%, respectively; Woolaver et al. 2013). Reptiles that feature frequently in the diet are skinks, anoles, tree snakes, and false boas; (Woolaver et al. 2013). Wiley and Wiley (1981) found small mammals, especially domestic rats Rattus rattus, to feature high in frequency and contribute most to biomass in three nests they observed.

Foraging Behavior

Four hunting techniques have been observed for Ridgway’s Hawk: still hunting from perches; hang-searching during gliding flight; foot-thrusting; and a direct stoop from soaring (Wiley and Wiley 1981).

Recommended Citation

Anderson, D. L., R. Thorstrom, C. D. Hayes, and T. Hayes (2017). Ridgway's Hawk (Buteo ridgwayi), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.ridhaw1.01