Effects of a transmission line on bird populations in the Red lake peatland, northern Minnesota.

Sedge wrens Cistothorus platensis and LeConte's sparrows Ammodramus leconteii had lower breeding-population densities in treatment areas than in control areas. LeConte's sparrows and Connecticut warblers Oporornis agilis occurred at greater mean distances from the transmission line in treatment areas than from a similarly positioned line in control areas. Data indicated negligible effects of this transmission line on bird populations, but interpretations are difficult. -from Authors