The Biggest Week is a 10-day birding festival held each May in NW Ohio, the Warbler Capital of the World! Hosted by Black Swamp Bird Observatory.

Oak Harbor, Ohio 43449
Joined September 2011
Migration is highly variable, and you never know what birds we'll see from year-to-year. We found 243 species in 10 days, including three notable rarities! The reasons for that are 1) birding here is aMAYzing!; and 2) our guides are SUPER AMAZING! #BirdsRule #BiggestWeek2023
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Snowy Egret right beside the road at the Magee Causeway- Mollie Langdon
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4,189
I spent less than two hours and had 16 warbler species, low and lovely, along the Magee Marsh boardwalk! Close enough for cell phone pics!
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Make that TEN Warbler species! We just added American Redstart and Black-throated Blue! ~Kimmer & Katie
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2,351
Eight species of warblers showing beautifully on the west end of the Magee Marsh boardwalk! Kimmer & Katie
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2,230
LOGGERHEAD SHRIKE has been seen for multiple hours along Girdham Road at Oak Openings. Continuing now as of 7:15 pm - Nate Koszycki
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(41.5526368, -83.8541334)
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8 Black-bellied Plovers landed in the mudflats across from the port-a-johns and restroom at Howard Marsh (between the restrooms and the pier). They stayed for all of 30 seconds before taking off and heading northeast. - Nicole Freshour & Dan Enders
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1,933
Snowy Egret right beside the road at the Magee Causeway - Jerald Reb
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1,818
The parking lot on the east side of Ottawa NWR near the pin posted previously is extremely full. Please park at the main visitors center if you plan on joining the search for the Kirtland’s to reduce backtracking. Take the walking trails behind the center for the fastest route
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KIRTLAND'S WARBLER singing at Ottawa NWR at GPS location: 41.611470°N 83.201560°W maps.google.com/maps?q=41.61… --James Muller and Austin Langdon
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Eastern Screech owl on the magee boardwalk now located on the west end near the roped off prothonotary nest - Brennan
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Kentucky still present at the Oak openings Buehner center around 41.5484393, -83.8426777. Yellow-throated warbler also singing closer to Lodge area. -Troy Herrel and Erik Bruhnke
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1,737
Hooded Warbler singing along north end of Buehner Center parking lot (in Oak Openings). -Erik Bruhnke of Naturally Avian/ VENT and Troy Herrel
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1,611
Lesser Black-backed Gull heading east off the beach at Magee - Sabrewing Nature Tours team
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Canada warbler and mourning warblers at the bridge and beyond at Oak Opening’s tornado alley. - Nicole Freshour & Dan Enders
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1,481
Lots of warbler song at Cedar Creeks Preserve including a Canada Warbler at GPS location: 41.592660°N 83.442980°W maps.google.com/maps?q=41.59…
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1,674
Canada Warbler giving good views at east entrance to Magee boardwalk. Marie R/Bear Track Studios
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1,396
Two Ruddy Turnstones just dropped in on the Maumee Bay Beach! --James Muller
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1,497
Immature Lesser Black-necked Gull hanging out on the very windy Maumee Bay State Park Beach. --James Muller
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1,765