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Nightjars, Nighthawks, and Other Goatsuckers

Explore the biology, behavior, and folklore of these nocturnal birds known for their wide mouths, cryptic plumage, and eerie vocalizations.

Episode:
116
Date:
May 12, 2025
Categories:

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Nightjars, Nighthawks, and Other Goatsuckers

Summary

In this episode, Ivan Phillipsen takes listeners on an immersive journey into the strange and secretive world of birds in the family Caprimulgidae. These cryptically colored, nocturnal birds include nightjars, nighthawks, poorwills, and whip-poor-wills. Ivan does a deep dive into the fascinating biology of this group—everything from their silent flight and frog-like gapes to their odd names and eerie calls.

Listeners will learn about the distinctive physical traits and behaviors that define caprimulgids, including their specialized eyes for low-light vision, aerial insect-hunting strategies, and bizarre mating displays involving wing claps and booming dives. Ivan also explores their global distribution, evolutionary history, and conservation status, while highlighting standout species like the Lyre-tailed Nightjar, the Common Poorwill, and the elusive—and possibly nonexistent—Nechisar Nightjar.

This deep dive into Caprimulgidae is packed with scientific insights and colorful storytelling. Whether it’s unpacking myths of goat-milking birds or playing spooky vocalizations from around the world, the episode celebrates the mystique and diversity of these birds that thrive in the twilight.

Research Citations

Photos

Common Nighthawk (Chordeiles minor). Photo by Richard/Adobe.
Common Nighthawk (Chordeiles minor). Photo by Kalvin Chan/iNaturalist.
Common Nighthawk (Chordeiles minor) eggs. Photo by Lauren McLaurin/iNaturalist.
Common Nighthawk (Chordeiles minor). Photo by Court Harding/iNaturalist.
Common Poorwill (Phalaenoptilus nuttallii). Photo by randimal/Adobe.
Common Poorwill (Phalaenoptilus nuttallii) with eyeshine. Photo by Christoph Moning/iNaturalist.
Collared Nightjar (Gactornis enarratus). Photo by Marc/Adobe.
Eurasian Nightjar (Caprimulgus europaeus). Photo by Tatiana/Adobe.
Eurasian Nightjar (Caprimulgus europaeus). Photo by Tamer Yilmaz/Adobe.
Sykes's Nightjar (Caprimulgus mahrattensis). Photo by Phil Benstead/iNaturalist.
White-throated Nightjar (Eurostopodus mystacalis). Photo by Indra Bone/iNaturalist.
White-throated Nightjar (Eurostopodus mystacalis) chick. Photo by Sandy/iNaturalist.
Great Eared-Nightjar (Lyncornis macrotis). Photo by Nigel Voaden/Flickr.
Great Eared-Nightars (Lyncornis macrotis). Photo by JJ Harrison/Wikimedia.
Male Standard-winged Nightjar (Caprimulgus longipennis). Photo by AGAMI/Adobe.
Lyre-tailed Nightjar (Uropsalis lyra). Photo by Grantat/Adobe.

Attributions

  • Great Eared-Nightjar sounds (Xeno Canto recording XC295014)
  • Eastern Whip-poor-will sounds (Xeno Canto recording XC905500)
  • Common Poorwill sounds (Xeno Canto recording XC373994)
  • Puerto Rican Nightjar sounds (Xeno Canto recording XC308517)
  • Rufous-cheeked Nightjar sounds (Xeno Canto recording XC364534)
  • Eurasian Nightjar sounds (Xeno Canto recording XC919033 and XC768850)
  • Common Nighthawk sounds (Xeno Canto recording XC490772 and XC818908)

This work by Ivan Phillipsen is licensed under CC BY-NC-SA 4.0

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