Which avian parasite is considered a major source of mortality for Orchard Orioles, particularly in southern breeding grounds?
Answer
Brown-headed Cowbirds
Nest parasitism carried out by Brown-headed Cowbirds is frequently cited as a significant factor contributing to mortality rates for the species, especially in the southern United States.
Related Questions
What is the IUCN classification assigned to the Orchard Oriole continentally?What distinctive plumage color characterizes the adult male Orchard Oriole?What type of habitat do Orchard Orioles generally avoid in favor of semi-open areas?How does the nest structure of the Orchard Oriole compare to that of the Baltimore Oriole?How many nesting broods does a pair of Orchard Orioles typically attempt to raise in a single breeding season?What food source do Orchard Orioles switch to heavily right before migration to gain quick energy?Which avian parasite is considered a major source of mortality for Orchard Orioles, particularly in southern breeding grounds?What physical trait distinguishes young males from females during their drab, non-adult plumage phase?What statistical trend reflects the overall population trajectory of the Orchard Oriole since 1966?What identification challenge do the drab coloration of females and young males sometimes present to observers?