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Appendix S1. Survey methodology.

Appendix S2. Potential influence of included environmental variables on the focal species.

Appendix S3. Description of random forest.

Table S1. True and selected scale-specific predictors in simulations.

Table S2. Correlations between selected predictors for curlew model.

Figure S1. Study area.

Figure S2. Histograms of observations with distance from transect.

Figure S3. Predicted curlew distribution.

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