| lead exposure and poisoning of songbirds using the coeur d'alene river basin, idaho. | previous studies have found widespread pb poisoning of waterfowl in the coeur d'alene river basin in northern idaho, usa, which has been contaminated by mining and smelting activities. we studied the exposure of ground-feeding songbirds to pb, sampling 204 american robins (turdus migratorius), song sparrows (melospiza melodia), and swainson's thrushes (catharus ustulatus) throughout the basin. these songbirds had mean blood pb concentrations (mg/kg, dry weight) of less than 0.19 at a reference a ... | 2011 | 21538831 |
| assessment of risks to ground-feeding songbirds from lead in the coeur d'alene basin, idaho. | previous assessment of ecological risks within the coeur d'alene basin identified lead as a key risk driver for ground-feeding songbirds. as this conclusion was based almost exclusively on literature data, its strength was determined to range from low to moderate. with the support of the u.s. environmental protection agency (usepa), the u.s. fish and wildlife service collected site-specific data to address the uncertainty associated with lead risks to songbirds. these data, plus those from the p ... | 2011 | 21793201 |