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Breeding ecology and predictors of nest success in the Critically Endangered Ridgway’s Hawk Buteo ridgwayi
(2015)
Ridgway’s Hawk Buteo ridgwayi is a Critically Endangered forest raptor endemic to the island of Hispaniola in the Caribbean. The species is currently limited to a small area on the north-east coast of the island, with fewer ...
Nestling sex ratio in a critically endangered dimorphic raptor, Ridgway's Hawk (Buteo ridgwayi)
(2013)
[English] Variation in nestling sex ratio is an important concept in population ecology, and has particular implications for the conservation status of small populations. Research on species exhibiting Reversed Sexual Size ...
Social and genetic mating system of Ridgway's hawk (Buteo ridgwayi), an endemic raptor on Hispaniola
(2013)
Patterns of social organization and mating systems have been shown to be functions of ecological factors such as resource allocation and breeding density. In some species, particularly birds, social organization and genetic ...
New population of critically endangered raptor discovered in Haiti
(2021)
Since the last recorded sighting in 1962, Ridgway’s Hawk was unknown from Haiti and was presumed extirpated. But, in August 2019, colleagues from the Haitian conservation organization, JACSEH (Jeunes en Action Pour la ...
Food habits of the endemic ashy-faced owl (Tyto glaucops) and recently arrived barn owl (T. alba) in Hispaniola
(2010)
The Ashy-faced Owl (Tyto glaucops) is endemic to Hispaniola, where the Barn Owl (T. alba) became established after ca. 1950. I examined 8322 vertebrate prey of the two species, using regurgitated pellets and prey remains ...
Spatial segregation between phenotypes of the diablotin Black-capped Petrel Pterodroma hasitata during the non-breeding period
(2023)
Despite growing support for ecosystem-based approaches, conservation is mostly implemented at the species level. However, genetic differentiation exists within this taxonomic level, putting genetically distinct populations ...
A preliminary report of ongoing research of the ecology of Black-capped Petrel (Pterodroma hasitata) in Sierra de Bahoruco, Dominican Republic – I: GPS tracking of breeding adults
(2019)
In the spring of 2018, we studied the foraging ecology of the Black-capped Petrel. The goal of this project was to gather fine-scale data on individual movements of Black-capped Petrels breeding in the Sierra de Bahoruco, ...
Pre-breeding behavior of Ridgway’s Hawks (Buteo ridgwayi) in Punta Cana, Dominican Republic
(2023)
Abstract: Recent conservation work by The Peregrine Fund has established a translocated population of the Critically Endangered Ridgway’s Hawk (Buteo ridgwayi) in Punta Cana, Dominican Republic. Although Ridgway’s Hawk has ...
Cactus fruits may facilitate Village Weaver (Ploceus cucullatus) breeding in atypical habitat on Hispaniola
(2003)
The Village Weaver (Ploceus cucullatus) usually is found in moist areas, breeding near water during the rainy season. On Hispaniola I observed the Village Weaver breeding in the desert, despite a lack of rain, and consuming ...
Historical demography of bird populations from Hispaniola assessed by nuclear and mitochondrial gene sequences
(2015)
Molecular markers can be used to infer the demographic history of a given species, but many historic processes simultaneously impact multiple species. Thus, comparative historical demography has the potential to provide ...