Interterritorial Habitat Variation in Grasshopper and Savannah Sparrows

摘要: Individual variation in features of habitat structure among territories breeding grasshopper sparrows and savannah a southern Wisconsin grassland was examined. Grasshopper sparrow established late the season were larger than those occupied earlier. In sparrows, time establishment had no significant effect upon territory size, but amount grass cover highly correlated with size differences. There considerable inter—territorial both species, patterns relating to position population, well—defined whereas generally showed little systematic pattern variation. Although these species similar situations after populations stabilized mid—June, they initially quite different portions spectrum. See full-tex...