Food color preferences against a dark, textured background vary in relation to sex and age in house finches (Carpodacus mexicanus)
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Many animals consume colorful foods, because bright coloration either enhances conspicuousness of food items or signals nutritional rewards. A comparatively under-studied aspect of food color preferences is the role of the background environment in shaping food detectability and choices. Previous work with house finches (Carpodacus mexicanus), for example, showed that individuals preferred red and green food items and avoided yellow ones. However, this study of desert, ground-feeding birds was done with seeds presented against an artificial white background that is unlikely to reflect natural conditions. Therefore, we performed a similar experiment, but quantified selection of colorful foods using a different visual environment that better mimicked natural conditions. We mixed dark, inedible distractor pellets (i.e., analogous to natural desert sand and rocks) with sunflower kernels that were colored red, green, yellow, or orange to test for differences in foraging patterns by sex, age, and expression of male plumage coloration in non-molting house finches. This food presentation resulted in yellow seeds having a significantly greater chromatic, but not achromatic, contrast with the background than red or green seeds. Under these conditions, all birds consumed yellow, and to a lesser extent red, seeds most often, and both adult males and females had a strong preference for yellow kernels; adult males also tended to prefer green kernels, but females tended not to prefer green kernels. Juveniles showed no significant preferences for any seed color, and adult male plumage coloration was not related to seed color preference. Therefore, in contrast to studies using different foraging environments, house finches tended to prefer yellow seeds, supporting models that suggest that visual background and contrast may be more important than color per se in visually mediated foraging decisions of birds. Moreover, the fact that adult males and females differed in food color preference has not been reported previously in songbirds.
1: Arizona State University, School of Life Sciences, Tempe, AZ 85287, USA
1. AvilésJ.M. , Perez-ContrerasT. , NavarroC. , SolerJ.J. ( 2008). "Dark nests and conspicuousness in color patterns of nestlings of altricial birds". — Am. Nat. Vol 171: 327- 338. http://dx.doi.org/10.1086/527493
2. BascuñánA.L. , TrouvilleE.A. , ToomeyM.B. , McGrawK.J. ( 2009). "Food color preferences of molting house finches ( Carpodacus mexicanus) in relation to sex and plumage coloration". — Ethology Vol 115: 1066- 1073. http://dx.doi.org/10.1111/j.1439-0310.2009.01697.x
3. BealF.E.L. ( 1907). "Birds of California in relation to fruit industry". — US Dept. Agric. Biol. Surv. Bull. Vol 30: 13- 23.
15. HammershojM. , SteenfeldtS. ( 2005). "Effects of blue lupin ( Lupinus angustifolius) in organic layer diets and supplementation with foraging material on egg production and some egg quality parameters". — Poult. Sci. Vol 84: 723- 733. http://dx.doi.org/10.1093/ps/84.5.723
17. HillG.E. ( 1994). "Geographic variation in male ornamentation and female mate preference in the house finch: a comparative test of models of sexual selection". — Behav. Ecol. Vol 5: 64- 73. http://dx.doi.org/10.1093/beheco/5.1.64
18. HillG.E. ( 2002). A red bird in a brown bag: the function and evolution of ornamental plumage coloration in the house finch. — Oxford University Press, New York, NY.
19. KacelnikA. ( 1984). "Central place foraging in the starling ( Sturnus vulgaris). I. Patch residence time". — J. Anita. Ecol. Vol 53: 283- 301. http://dx.doi.org/10.2307/4357
20. KotlerB.P. , BrownJ.S. , MitchellW.A. ( 1994). "The role of predation in shaping the behavior, morphology and community organization of desert rodents". — Austr. J. Zool. Vol 42: 449- 466. http://dx.doi.org/10.1071/ZO9940449
27. McGrawK.J. ( 2006). "Mechanics of carotenoid-based coloration". — In: Bird coloration, Volume 1: Mechanisms and measurements( HillG.E. , McGrawK.J. , eds). Harvard University Press, Cambridge, MA, p. 177- 242.
28. McGrawK.J. , HillG.E. ( 2004). "Plumage color as a dynamic trait: carotenoid pigmentation of male house finches ( Carpodacus mexicanus) fades during the breeding season". — Can. J. Zool. Vol 82: 734- 738. http://dx.doi.org/10.1139/z04-043
29. MilinskiM. , ParkerG.A. ( 1991). "Competing for resources". — In: Behavioural ecology: an evolutionary approach( KrebsJ.R. , DaviesN.B. , eds). Blackwell Publishing, Oxford, p. 167- 168.
30. OhlssonT. , SmithH.G. , RåbergL. , HasselquistD. ( 2002). "Pheasant sexual ornaments reflect nutritional conditions during early growth". — Proc. Roy. Soc. Lond. B: Biol. Vol 269: 21- 27. http://dx.doi.org/10.1098/rspb.2001.1848
33. RoddF.H. , HughesK.A. , GretherG.F. , BarilC.T. ( 2002). "A possible non-sexual origin of mate preference: are male guppies mimicking fruit?"— Proc. Roy. Soc. Lond. B: Biol. Vol 269: 475- 481. http://dx.doi.org/10.1098/rspb.2001.1891
34. SchaeferH.M. , LeveyD.J. , SchaeferV. , AveryM.L. ( 2006). "The role of chromatic and achromatic signals for fruit detection by birds". — Behav. Ecol. Vol 17: 784- 789. http://dx.doi.org/10.1093/beheco/arl011
38. SprenkleJ.M. , BlemC.R. ( 1984). "Metabolism and food selection of eastern house finches". — Wilson Bull. Vol 96: 184- 195.
39. StobbeN. , DimitrovaM. , MerilaitaS. , SchaeferH.M. ( 2009). "Chromaticity in the UV/blue range facilitates the search for achromatically background-matching prey in birds". — Phil. Trans. Roy. Soc. B Vol 364: 511- 517. http://dx.doi.org/10.1098/rstb.2008.0248
40. Stockton-ShieldsC. ( 1997). Sexual selection and the dietary color preferences of house finches. — MSc thesis, Auburn University, Auburn, AL.
41. ToomeyM.B. , ButlerM.W. , McGrawK.J. ( 2010). "Immune-system activation depletes retinal carotenoids in house finches ( Carpodacus mexicanus)". — J. Exp. Biol. Vol 213: 1709- 1716. http://dx.doi.org/10.1242/jeb.041004
42. ToomeyM.B. , McGrawK.J. ( 2011). "The effects of dietary carotenoid supplementation and retinal carotenoid accumulation on vision-mediated foraging in the house finch". — PLoS ONE Vol 6: e21653(doi: 10.1371/journal.pone.0021653). http://dx.doi.org/10.1371/journal.pone.0021653
43. TroyD.M. , BrushA.H. ( 1983). "Pigments and feather structure of the redpolls, Carduelis flammeaand C. hornemanni ". — Condor Vol 85: 443- 446. http://dx.doi.org/10.2307/1367983