Black Hawk-Eagle Spizaetus tyrannus

  • Order: Accipitriformes
  • Family: Accipitridae
  • Polytypic: 2 subspecies
  • Authors: Ignacio Quintero and Andrés Jácome
Sections

Breeding

Little information. In Panama, chicks were recorded in February, young with feathers in July and fledglings in August. Young have a large dependency period; consequently, it seems that parents nest only every third year (in Panamá and Yucatan Peninsula) (Rangel-Salazar and Enriquez-Rocha 1993).

One nest was 110 cm wide, and located 17 m above the ground. Other nests have been spotted in tall trees and palms (e.g., Roystonea) (Bierregaard 1994). In the Yucatán Peninsula, a nest was found in a 23 m tall mahogany tree (Swietenia microphylla) at 17 m above the ground. The diameter of this nest was 70 cm; nest materials included zapote (Minilkara zapote), txalam (Lysiloma latisiliquia) and a vine (Styzophyllum riparium) (Rangel-Salazar and Enriquez-Rocha 1993).

Black Hawk-Eagle nestlings stand up in the first 5 weeks and flap in place in the 4th week; sometimes, at the 4th week, chicks move from the nest to adjacent branches (Whitacre et al. 2002). At the 8th week, chicks were able to feed themselves (Whitacre et al. 2002).

Recommended Citation

Quintero, I. and A. Jácome (2011). Black Hawk-Eagle (Spizaetus tyrannus), version 1.0. In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/nb.blheag1.01