First description of the breeding biology of the North Philippine Hawk-Eagle (Nisaetus philippensis): a Journal of Ornithology
The Wilson Journal of Ornithology
; 134(1):77-85, 2022.
Article
in English
| ProQuest Central | ID: covidwho-2022179
ABSTRACT
This study presents the first description of the breeding biology of the IUCN Endangered North Philippine Hawk-Eagle (Nisaetus philippensis). We describe a single pair's breeding phenology, nest characteristics, diet, chick development, and behavior through on-the-ground and remote observations from 1 February to 14 May 2020. Due to limited mobility during the COVID-19 pandemic, we improvised a video recording setup for remote monitoring and used machine learning to extract data from images. The nest was a low cup/fork type stick nest placed on a Malabulak tree (Bombax ceiba) in a heavily disturbed secondary forest. When it was first found, the incubation stage was underway and lasted for 1 month as the nestling emerged on 1 March 2020. Both adults provided parental care throughout the breeding period, with the male primarily providing food and the female attending to the nest, egg, and chick. They preyed on a wide range of vertebrates such as lizards, ground birds, bats, rodents, and domestic animals. With a single egg per clutch and a relatively long breeding cycle, the species has a slow reproductive output that may contribute to its current threatened status.
Biology--Ornithology; Asian raptors; chick development; nest monitoring; parental care; threatened raptor; Pandemics; Video recording; Parental behaviour; Remote monitoring; Phenology; Domestic animals; Reproductive cycle; Eggs; Biology; COVID-19; Machine learning; Lizards; Breeding; Chicks; Adults; Neural networks; Classification; Ova; Ground-based observation; Surveillance; Vertebrates; Incubation; Philippines; Luzon; Spizaetus philippensis
Full text:
Available
Collection:
Databases of international organizations
Database:
ProQuest Central
Language:
English
Journal:
The Wilson Journal of Ornithology
Year:
2022
Document Type:
Article
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