Prothonotary Warbler, hard to pronounce, hard to find! The Pro-tho-notary or pro-thon-otary warbler is a bright yellow warbler with blueish-gray wings. It makes its home in wooded wetlands, with a strong preference for river flood plains. It competes for nesting cavities with house wrens and is a favorite host for cowbird eggs. Tough luck! If they can find a home, they might end up raising some other species babies. You can find this elusive bird along the banks of the Huron River. Floating in a canoe or kayak at Hudson Mills or Oakwoods Metroparks looking for a Prothonotary Warbler is a great way to spend a spring or summer day.