Which native bird is the major brood parasite that significantly lowered Kirtland's Warbler reproductive success?
Answer
Brown-headed Cowbird
The second major threat compounded the issue: brood parasitism by the native Brown-headed Cowbird, which expanded eastward as forests fragmented.
#Videos
I Tracked Down the RAREST Warbler in the United States! - YouTube
Related Questions
What title is given to the Kirtland's Warbler regarding its rarity in North America?In what year did the Kirtland's Warbler come off the endangered species list in the United States?What specific feature defines the Kirtland's Warbler's breeding habitat requirement?What is a conspicuous field mark shared by few other species on the adult Kirtland's Warbler?What distinguishing behavior does the Kirtland's Warbler exhibit while perched?What is the required age range for the jack pine trees in an ideal Kirtland's Warbler breeding stand?Where is the majority of the Kirtland's Warbler's non-breeding time spent?What human intervention during the 1800s is believed to have caused an all-time high in the warbler population?Which native bird is the major brood parasite that significantly lowered Kirtland's Warbler reproductive success?What were the two main components of the recovery strategy established in 1973?