EXPOSURE OF NONBREEDING MIGRATORY SHOREBIRDS TO CHOLINESTERASE- INHIBITING CONTAMINANTS IN THE WESTERN HEMISPHERE.

The article presents a study which determines the possibility of migratory shorebirds exposure to cholinesterase-inhibiting pesticides in agricultural sites in North and South America. It evaluates the exposure of migratory shorebirds to organophosphorus and carbamate compounds by comparing its plasma cholinesterase activities and body masses. The result suggests that shorebirds have no acute exposure to the pesticides, however, buff-breasted sandpipers were expose in South America.