Named from Smith Creek Cave, Nevada, Willett's Hawk-eagle had a number of similarities with the Golden Eagle, but was larger and heavier.
Spizaetus willetti Howard, 1935. Willett's hawk-eagle. Taxonomy & Nomenclature. Conservation Status. Extinct. Last record: Late Pleistocene. Distribution.
Fossil species such as Spizaetus willetti may have grown to similar sizes as the modern harpy eagle (Harpia harpyja). Studies based on the genetic ...
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Belongs to Spizaetus according to Howard 1935. Sister taxa: Spizaetus grinnelli, Spizaetus ornatus, Spizaetus tanneri. Ecology: volant carnivore.
of identity of the Nevada species and the living South African bird are remote. The cave bird is therefore here described as. Spizaeitus willetti, new species.
Spizaetus was named by Vieillot (1816). It is extant. It was assigned to Buteoninae by Wetmore (1940) and Wetmore (1956); to Aquilinae by Howard (1932) and ...
Spizaetus willetti Howard, 1935 · Online Resources · Compiled distribution maps · Occurrence records map (0 records) · Datasets.
Apr 1, 1971 · Diagnosis. Tarsometatarsus slightly smaller than in. Spizaetus willetti Howard from which it also differs in having the facet for metatarsal I ...
Spizaetus willetti, and Teratornis incredibilis, arepeculiar to. Smith Creek Cave. Coragyps occidentalis ( 2 specimens ) has been recorded from other cave ...
Aquila claudeguerini also shows similarities with Spizaetus willetti, in particular in the very elongate shape of the fossa met. I and the very small ...
