New Record of Shiny Cowbird (Molothrus bonariensis) Parasitism of Black-chinned Siskins (Carduelis barbata)

摘要

I present the second record of Shiny Cowbird (Molothrus bonariensis) parasitism of the Black-chinned Siskin (Carduelis barbatd). The last recorded observation was in 1929. This also represents the northernmost nesting record of the Black-chinned Siskin.