| eggshell thickness in marine birds in the new york bight--1970s to 1990s. | maintaining eggshell thickness is critical for birds, as thin eggshells result in breakage during incubation, with subsequent hatching failure. beginning in the 1960s, eggshell thickness has been used as a biomarker of exposure to chlorinated hydrocarbon pesticides, as a measure of avian population health, and as a predictor of potential reproductive failures. in this study, eggs were collected from four coastal bird species nesting in the new york bight (cedar beach, ny to barnegat bay, nj) in ... | 1995 | 7661628 |