WSO invited the bird lovers of Wisconsin to participate in the state’s first ever Big Birding Bash over the weekend of May 21-22. It was an open invitation to members and non-members alike and to birders of all levels to join a bird walk, field trip, volunteer work day or community science event.
The only ask from WSO was that groups or individuals contribute their sightings during those two days to a shared eBird list at WSOBBB so we could see how many species could be found statewide over one weekend in May.
Checklists are still showing up in eBird, but so far more than 500 have been submitted, tallying 239 species. Look for more complete information and a species list in the July-August issue of The Birder. You also can get some up-to-date information from the eBird Profile for the Bash at 
https://ebird.org/profile/MzE0MDg3OA/US-WI
Jennifer Lazewski, executive director of WSO, said she was particularly pleased at the breadth of participation in the event by a wide variety of organizations with results already in from 48 counties. Among participating groups:
-- BIPOC Birding Club in Madison conducted bird banding at the Waupaca Biological Field Station.
-- Friends of Lake Park held a warbler walk in Milwaukee,
-- The Sunday Birders group did a bird walk in Estabrook Park in Shorewood.
-- Urban Ecology Center held its Brew City Birding Festival.
-- Wisconsin Metro Audubon Society held a bird walk at Seminary Woods in St. Francis.
-- Noel J. Cutright Bird Club led a two-day field trip all the way from the Southern Kettle Moraine State Forest to Wyalusing State Park, eBirding more than 125 species across 7 counties
-- Richland Center held both a bird walk and a Chimney Swift Roost Count.
-- Benjamin F. Goss Bird Club did a field trip to Paradise Valley.
-- Winnebago Audubon Society did a bird hike at Uihlein Marsh Waterfowl Production Area.
-- Madison Audubon eBirded from its Bird, Bikes and Brews event.
-- WSO itself led multiple events, including a four-hour field trip at Lapham Peak State Park, a spring migration field trip at Hog Island, an Estabrook Beer Garden Meet-up and a Bird Walk for Beginners at Argyle in Lafayette County.
-- Jeff Baughman, longtime WSO field trips co-chair, staged an ambitious dawn-to-dusk series of field trip events across the Kettle Moraine State Forest-Northern Unit, Horicon Marsh National Wildlife Refuge and other birding hot spots in eastern Fond du Lac County.
Learning the ropes at the WSO Bird Walk for Beginners at Erickson Conservation Area in Argyle
