Jirinec, V.,Campos, B.R., and Johnson, M.D. 2011. Roosting behavior of migratory songbird on Jamaican coffee farms: landscape composition may affect delivery of an ecosystem service. Bird Conservation International. 1-9.

            Recent studies have indicated that birds provide ecosystem services (i.e. reducing insect pest) in shade coffee. Jirinec et al. (2011) studied the Black-throated Blue warbler movement patterns between diurnal and nocturnal range, in a coffee habitat located in western Jamaica. They chose to study this species because: a) it has been considered as the most significant potential predator of coffee borer predator on high altitude coffee plantations, and b) because its high capture rate in the farms studied. They mist-netted 24 birds, and attached a radio transmitter to each bird. The authors conducted diurnal and nocturnal radio tracking. In this study, the authors used ArcGIS version 9.2 in the vegetation sampling design, as well as to compile, manage and spatially analyze the data collected.  Jirinec et al. (2011), found that the captured Black-throated Blue Warblers commuted back and forth, from the coffee farms to the adjacent forests. While the diurnal range, where the birds were captured, is related to foraging habitat, the nocturnal range is linked to the adjacent forest used for roosting. Based on their results, the authors indicate the high connectivity between two systems, and the high probability that the ecosystem services provided by the birds in this study, may depend on the proximity of the forest where they roost.