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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

Demography and Populations

Population estimates for the wild population of Ridgway's Hawk in Los Haitises National Park ranges from 110 breeding pairs (Woolaver 2014) to 200 breeding pairs (T. Hayes and R. Thorstrom, unpublished data), although these numbers are imprecise. Biologists working for The Peregrine Fund monitor as many as 100 pairs per year, thus setting a minimum population size. In 2016 the translocated population in Punta Cana, managed by The Peregrine Fund, was 12 breeding pairs, with 8 fledglings produced.

Ridgway’s Hawk will breed at one year of age, although this is uncommon (T. Hayes and R. Thorstrom, unpublished data). Breeding more often begins in the second breeding season after fledging. Of 43 records from banded nestlings, dispersal distances from natal territory to breeding territory ranged from 0.83 to 8.04 km (T. Hayes and R. Thorstrom, unpublished data). The greatest known age obtained by a wild individual is 13 years (T. Hayes and R. Thorstrom, unpublished data).

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.