Table 1.

Morisita–Horn sample similarity indices

Habitat	Shaded	Riparian	Secondary	Fragment	Las Cruces	Amistad
Open coffee	0.93	0.51	0.54	0.32	0.16	0.05
Shaded coffee		0.58	0.60	0.36	0.17	0.07
Riparian			0.80	0.64	0.55	0.37
Secondary				0.80	0.62	0.57
Fragment					0.86	0.80
Las Cruces						0.82

Morisita–Horn sample similarity comparisons between habitats indicate highly similar bird communities of open and shaded coffee habitats, with the forest communities becoming more differentiated along the increasing primary forest axis from riparian sites to the Amistad International Park. Here, Swainson’s thrushes are excluded because large numbers migrated through the study region without wintering, and their preference for forest skews the similarity values, especially for Amistad, where they comprised 41% of all birds caught in the mist nets. See SI Appendix, Table S2 for the comparison that includes Swainson’s thrushes.