On this page: Introduction | Tracking | Nest Monitoring

Why Study Whip-poor-wills?

The Eastern Whip-poor-will is a nocturnal bird species found in North and Central America. It belongs to the nightjar family, which also includes nighthawks and Chuck-will’s-widows.

Whip-poor-wills prefer habitats with open woodlands, scrubby areas, and fields, and are often found in mixed or deciduous forests. They are generally distributed across eastern and central North America, as well as parts of Mexico and Central America. Whip-poor-wills face some conservation concerns, including habitat loss. Monitoring and protecting their habitats are crucial for their long-term survival.

Whip-poor-will Research

Critical information is currently lacking regarding the reproductive success, nest predation rates, and dietary composition of Whip-poor-wills during their breeding season in Maine. Furthermore, there is little knowledge concerning the migratory ecology of Whip-poor-wills in the state, with a lack of essential details such as migratory timings, pathways, migratory connectivity, stopover locations, and potential threats.

In 2023, The Maine Natural History Observatory partnered with the Maine Department of Inland Fisheries and Wildlife and BRI to expand the study of Maine’s nightjars including the Whip-poor-will. The primary objective of this project is to complement ongoing monitoring initiatives by collecting essential data in these areas of Whip-poor-will ecology. The research initiative will encompass nesting ground surveys and movement studies conducted in four sub regions within the state to gain insight on this species and guide effective management strategies.

This collaborative research effort is funded, in large part, by the Maine Department of Inland Fisheries and Wildlife.

Tracking

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To track Eastern Whip-poor-wills, they were outfitted with VHF nanotags during the 2023 pilot field season. Beginning in mid to late September, the marked birds began to be detected at Motus receiver stations throughout the eastern and midwestern United States. One bird, tagged in Kennebunk, Maine was last detected just a few hundred feet north of Rio Grande.

Nest Monitoring

The research team field tested Whip-poor-will nest searching and monitoring methods during the 2023 pilot season, locating two whip-poor-will and one nighthawk nest. Nests were remotely monitored using “no glow” infrared trail cameras until fledging, after which vegetative assessments were conducted in accordance to standardized nightjar research methods. Expanded nest monitoring efforts will take place during the 2024 and 2025 field seasons.

Photo Credits: Header photo © Heather L. Hubbard; Research photos © BRI