A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
The Eurasian Treecreeper (Certhia familiaris) has an effective camouflage against mammalian but not avian vision in boreal forests (2022)
Nokelainen, O., Helle, H., Hartikka, J., Jolkkonen, J., & Valkonen, J. K. (2022). The Eurasian Treecreeper (Certhia familiaris) has an effective camouflage against mammalian but not avian vision in boreal forests. Ibis, 164(3), 679-691. https://doi.org/10.1111/ibi.13056
JYU-tekijät tai -toimittajat
Julkaisun tiedot
Julkaisun kaikki tekijät tai toimittajat: Nokelainen, Ossi; Helle, Heikki; Hartikka, Juho; Jolkkonen, Juho; Valkonen, Janne K.
Lehti tai sarja: Ibis
ISSN: 0019-1019
eISSN: 1474-919X
Julkaisuvuosi: 2022
Ilmestymispäivä: 17.02.2022
Volyymi: 164
Lehden numero: 3
Artikkelin sivunumerot: 679-691
Kustantaja: Wiley-Blackwell
Julkaisumaa: Britannia
Julkaisun kieli: englanti
DOI: https://doi.org/10.1111/ibi.13056
Julkaisun avoin saatavuus: Avoimesti saatavilla
Julkaisukanavan avoin saatavuus: Osittain avoin julkaisukanava
Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/81855
Tiivistelmä
A well-known example of visual camouflage in birds is the plumage coloration of the Eurasian Treecreeper Certhia familiaris, yet this species’ camouflage has never been objectively quantified. Here, we quantify treecreeper camouflage in its boreal forest habitat, test whether treecreepers better match tree backgrounds at nest site, territory or habitat spatial scales, and explore which common tree species provide the best background match. Using photographic data of the birds and forested backgrounds, we test their background match using human, ferret and avian vision modelling. We found that a treecreeper’s wing and mantle provided closest background matching, whereas the wing stripe and tail were more conspicuous against tree trunks. Vision modelling also suggests that treecreeper camouflage provides a better protection against mammalian than against avian vision. The matching was not significantly different across spatial scales in local spruce forests. However, the background match was better on conifers than deciduous trees. Our results support the longstanding conjecture of treecreeper camouflage, but also suggest that the camouflage is an adaptation especially against mammalian predators, which are important nest predators of treecreepers.
YSO-asiasanat: puukiipijä (laji); suojaväri; habitaatti; puulajit
Vapaat asiasanat: background matching; habitat selection; vision model; QCPA
Liittyvät organisaatiot
OKM-raportointi: Kyllä
Raportointivuosi: 2022
JUFO-taso: 1