The importance of cross-validation, accuracy, and precision for measuring plumage color: A comment on Vaquero-Alba et al. (2016)
| Autor: | Joanna K. Hubbard, Amanda K. Hund, Matthew R. Wilkins, Iris I. Levin, Kevin J. McGraw, Rebecca J. Safran |
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| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Accuracy and precision Ecology 030206 dentistry Biology 010603 evolutionary biology 01 natural sciences Reflectivity Cross-validation 03 medical and health sciences 0302 clinical medicine Plumage Feather visual_art visual_art.visual_art_medium Animal Science and Zoology Ornithology Cartography Ecology Evolution Behavior and Systematics |
| Zdroj: | The Auk. 134:34-38 |
| ISSN: | 1938-4254 0004-8038 |
| Popis: | Vaquero-Alba and colleagues published a study in The Auk: Ornithological Advances comparing objective color measurements of plumage taken in the field directly on a bird's body to those taken in the lab on collected feathers arranged to emulate the appearance of a bird's natural plumage. Although the field measures of plumage color were less repeatable than lab measures, the authors concluded that measurements taken in the field were more representative of a bird's “true color.” Accordingly, they recommend that researchers should bring spectrophotometers into the field to measure color on live birds. We question the assumption that their field measurements represent true color and highlight concerns regarding their experimental design and methodology. Because they did not measure color of live birds in the lab or the color of plucked feathers in the field, they cannot directly test whether the assessment of color in the field on a live bird is superior. Also, rather than assume field measures are... |
| Databáze: | OpenAIRE |
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