"New Nesting Dates for Brown Thrashers Toxostoma-Rufum Loggerhead Shrikes Lanius-Ludovicianus and American Robins Turdus-Migratorius in North-Dakota USA".
"New Nesting Dates for Brown Thrashers Toxostoma rufum Loggerhead Shrikes Lanius-Ludovicianus and American Robins Turdus-Migratorius in North-Dakota USA".