Using field photography to study avian moult
2017
Vieira, Bianca P. | Furness, Robert W. | Nager, Ruedi G.
Methods to obtain moult data from wild birds have not changed much over the last century and most studies still depend on checking museum specimens or capturing birds. Here we assess the applicability of systematic field photography for detecting and scoring moult in adult Black Skimmers Rynchops niger from southern Brazil. Moult data extracted from photographs have a high within‐ (RGLMM = 0.98) and between‐observer repeatability (RGLMM = 0.97) and show very good fit to current Underhill–Zucchini moult models (R² = 0.75). Photography offers the advantages of being less invasive, requiring less equipment and human effort, being feasible in areas where captures may not be possible, and causing less disturbance, so enhancing the number of sampled individuals.
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