Data from: Feather melanin and micro-structure variation in dark-eyed junco (Junco hyemalis) across an elevational gradient in the Selkirk Mountains

de Zwaan DR, Greenwood JL, Martin K

Date Published: September 22, 2016

DOI: http://dx.doi.org/10.5061/dryad.ks53j

 

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Title Plumage colour measurements for Dark-eyed juncos in the Selkirk Mountains
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Description A combination of morphological and body condition data collected in the field, as well as LAB colour space data measured in Adobe Photoshop for head and dorsal regions. Column heading abbreviations: FWS is the unique individual identifier; std.l, std.a, and std.b are the L*A*B* colour variables for a black standard colour chip included in each photo; head.l, head.a, head.b are the L*A*B* colour variables for the mantle; back.l, back.a, back.b are the L*A*B* colour variables for the dorsal region.
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Title Feather microstructure measurements for Dark-eyed junco in the Selkirk Mountains
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Description A combination of body condition data and feather microstructure variables. Originally, all microstructure variables were measured twice on two separate feathers. After finding there was no difference between variables measured on separate feathers (P>0.33), we pooled the variables within individual and the averaged values are depicted in this data set (i.e., one row per individual). Column heading abbreviations: penn.length & plum.length are the linear measurements of the pennaceous and plumulaceous feather regions respectively; penn.barb is the number of pennacous barbs counted to measure density; penn.density.length is the length over which the barbs were counted; penn.density is penn.barb/penn.density.length; penn.barbules: this series is the same as the penn.barb columns but for barbule densities measured twice (on two separate barbs); barbule.length: measurements of individual barbule length from 5 randomly selected barbules on the section of the barb that barbule density was measured.
Download feather microstructure data _ JAV-01050_R1.csv (23.85 Kb)
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Title Plumage reflectance data for Dark-eyed junco in the Selkirk Mountains
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Description A combination of body condition data collected in the field and plumage reflectance data derived from the R package 'pavo' (Maia et al. 2013) which is based on Stoddard and Prum (2008)'s 'Tetracolourspace'. The data was generated using an average avian visual and achromatic cone system. Column heading abbreviations: u.p, s.p, m.p, l.p: proportion of ultra-violet, short wave, medium wave, and long wave reflectance, respectively; u.r, s.r, m.r, l.r: relative reflectance for each wavelength category; the remaining variables (x, y, z, h.theta, h.phi, r.vec, r.max, and r.achieved) were ultimately not used in the final analysis but serve to place individuals in a 3D Tetracolourspace and also allow calculation of variables such as brilliance and chroma which tend to be more important for carotenoid colours (see Stoddard and Prum 2008 for a more detailed description).
Download Reflectance_JAV-01050_R1.csv (23.19 Kb)
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When using this data, please cite the original publication:

de Zwaan DR, Greenwood JL, Martin K (2017) Feather melanin and microstructure variation in dark-eyed junco Junco hyemalis across an elevational gradient in the Selkirk Mountains. Journal of Avian Biology 48(4): 552-562. http://dx.doi.org/10.1111/jav.01050

Additionally, please cite the Dryad data package:

de Zwaan DR, Greenwood JL, Martin K (2016) Data from: Feather melanin and micro-structure variation in dark-eyed junco (Junco hyemalis) across an elevational gradient in the Selkirk Mountains. Dryad Digital Repository. http://dx.doi.org/10.5061/dryad.ks53j
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