| effects of shallow natural gas well structures and associated roads on grassland songbird reproductive success in alberta, canada. | grassland songbird populations across north america have experienced dramatic population declines due to habitat loss and degradation. in canada, energy development continues to fragment and disturb prairie habitat, but effects of oil and gas development on reproductive success of songbirds in north american mixed-grass prairies remains largely unknown. from 2010-2012, in southeastern alberta, canada, we monitored 257 nests of two ground-nesting grassland songbird species, savannah sparrow (pass ... | 2017 | 28355241 |