Why Doesn’t Fewer Cowbirds Mean Less Nest Parasitism? https://wilsonsociety.org/2024/02/07/guest-post-why-doesnt-fewer-cowbirds-mean-less-nest-parasitism/

"When #cowbird abundance declines, such as is occurring in the #OkanaganValley and throughout much of North America, a sort of 'competitive release' could occur, where individual female #cowbirds may be free to maintain larger egg-laying territories and to parasitize more nests."

#Birds #Bird #Animals #Ecology #Parasites #NestParasitism