Illinois Maryland Oklahoma Wildlife 
10,000 Birds
DECEMBER 14, 2021
The Collective added six new states in the past three years, but none have eclipsed the century mark: Wisconsin ( 74 ), Utah (55), Hawaii (38), Oklahoma (18), Rhode Island (9), and Connecticut (5). For example, my list of the Top 25 National Wildlife Refuges for birding includes an excellent location in Minnesota ( Minnesota Valley NWR ).
10,000 Birds
NOVEMBER 13, 2018
Even some states that technically have checklists barely qualify: the great state of Illinois has just a single checklist with two species (from an airport). For example, my list of the Top 25 National Wildlife Refuges for birding includes locations in Utah ( Bear River MBR ), Minnesota ( Minnesota Valley NWR ), and Wisconsin ( Horicon NWR ).
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