ArticleScientific reports2019
Correlates of individual variation in the porphyrin-based fluorescence of red-necked nightjars (Caprimulgus ruficollis).
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 24 citations in OpenAlex.
- Variation in the Oxidative State of Collared Flycatcher (Ecology and evolution · 2026Article
- UV-Induced Fluorescence in the Balance: Mate Choice and Predation Risk in the Female Ornamented Jumping Spiders.Integrative zoology · 2026Article
- Evidence for fluorescence-supported species recognition in syntopic harvestmen.Scientific reports · 2026Article
- Breeding performance of an aerial insectivorous bird under contrasting farming systems.Ecological applications : a publication of the Ecological Society of America · 2025Article
- Nestling Plumage Colour Variation in a Sexually Dichromatic Hole-Nesting Passerine Bird-Potential Functions and Mechanisms.Ecology and evolution · 2025Article
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- Does biofluorescence enhance visual signals in birds-of-paradise?Royal Society open science · 2025Article
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- Photoluminescence in mammal fur: 111 years of research.Journal of mammalogy · 2023Article
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- Brighter is better: bill fluorescence increases social attraction in a colonial seabird and reveals a potential link with foraging.Behavioral ecology and sociobiology · 2021Article
- Vivid biofluorescence discovered in the nocturnal Springhare (Pedetidae).Scientific reports · 2021Article
- Contrasting stripes are a widespread feature of group living in birds, mammals and fishes.Proceedings. Biological sciences · 2020Article
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Authors and funding
5 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Many nocturnal animals, including invertebrates such as scorpions and a variety of vertebrate species, including toadlets, flying squirrels, owls, and nightjars, emit bright fluorescence under ultraviolet light. However, the ecological significance of this unique coloration so attached to nocturnality remains obscure. Here, we used an intensively studied population of migratory red-necked nightjars (Caprimulgus ruficollis) to investigate inter-individual variation in porphyrin-based pink fluorescence according to sex, age, body condition, time of the year, and the extent of white plumage patches known to be involved in sexual communication. Males and females exhibited a similar extent of pink fluorescence on the under-side of the wings in both juvenile and adult birds, but males had larger white patches than females. Body condition predicted the extent of pink fluorescence in juvenile birds, but not in adults. On average, the extent of pink fluorescence in juveniles increased by ca. 20% for every 10-g increase in body mass. For both age classes, there was a slight seasonal increase (1-4% per week) in the amount of fluorescence. Our results suggest that the porphyrin-based coloration of nightjars might signal individual quality, at least in their first potential breeding season, although the ability of these and other nocturnal birds to perceive fluorescence remains to be unequivocally proven.
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