Table 1. Summary of the 20 randomized runs of the boosted classification tree (BCT) models analysing habitat suitability of the nesting location of successful breeding pairs (at least one fledgling per season).

The BCT models compare the habitat characteristics in pixels of 50 × 50 m around nests (59 nests with breeding success recorded in six years from 2011 to 2016) against the same number of pixels of the same size randomly obtained from the pine forests of Inagua reserve. Twelve environmental variables were used in all BCT models (see Table 2).

	Mean	sd	Minimum	Maximum
Number of boosted trees	4,640	996.1	2,800	6,400
Ten-fold cross-validation AUC	0.905	0.024	0.869	0.938
Sensitivity	0.999	0.004	0.983	1.000
Specificity	0.979	0.015	0.932	1.000
Negative predictive value	0.999	0.004	0.983	1.000
Positive predictive value	0.979	0.015	0.937	1.000