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Horicon Marsh SWA--Greenhead Impoundment

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Bird List

Updated ~12 seconds ago
165 All Years 0 This Year 2025 0 This Month Jan 2025
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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (165)

  1. Black-capped Chickadee Poecile atricapillus
    # Count: 5
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  2. White-breasted Nuthatch Sitta carolinensis
    # Count: 3
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  3. Killdeer Charadrius vociferus
    # Count: 30
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  4. Wilson's Snipe Gallinago delicata
    # Count: 3
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  5. Lesser Yellowlegs Tringa flavipes
    # Count: 30
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  6. Greater Yellowlegs Tringa melanoleuca
    # Count: 30
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  7. Great Egret Ardea alba
    # Count: 5
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  8. Red-winged Blackbird Agelaius phoeniceus
    # Count: X
    Date:
    Observer: Chelsy Herring
    Location: Horicon Marsh SWA--Greenhead Impoundment
  9. Northern Shoveler Spatula clypeata
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  10. Mourning Dove Zenaida macroura
    # Count: 5
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  11. Sandhill Crane Antigone canadensis
    # Count: 7
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  12. Spotted Sandpiper Actitis macularius
    # Count: 1
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  13. Solitary Sandpiper Tringa solitaria
    # Count: 2
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  14. Green Heron Butorides virescens
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  15. Great Blue Heron Ardea herodias
    # Count: 3
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  16. American White Pelican Pelecanus erythrorhynchos
    # Count: 15
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  17. Turkey Vulture Cathartes aura
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  18. Hairy Woodpecker Dryobates villosus
    # Count: 1
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  19. Northern Flicker Colaptes auratus
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  20. Eastern Wood-Pewee Contopus virens
    # Count: 2
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  21. Eastern Kingbird Tyrannus tyrannus
    # Count: 2
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  22. Blue Jay Cyanocitta cristata
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  23. Purple Martin Progne subis
    # Count: 2
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  24. Barn Swallow Hirundo rustica
    # Count: 2
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  25. Gray Catbird Dumetella carolinensis
    # Count: 2
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  26. Cedar Waxwing Bombycilla cedrorum
    # Count: 30
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  27. Song Sparrow Melospiza melodia
    # Count: 1
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  28. Swamp Sparrow Melospiza georgiana
    # Count: 1
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  29. Canada Goose Branta canadensis
    # Count: 4
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  30. Tree Swallow Tachycineta bicolor
    # Count: 7
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  31. Northern House Wren Troglodytes aedon
    # Count: 4
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  32. European Starling Sturnus vulgaris
    # Count: 5
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  33. American Robin Turdus migratorius
    # Count: 5
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  34. House Sparrow Passer domesticus
    # Count: 2
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  35. American Goldfinch Spinus tristis
    # Count: 4
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  36. Brown-headed Cowbird Molothrus ater
    # Count: 5
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  37. Common Grackle Quiscalus quiscula
    # Count: 1
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  38. Common Yellowthroat Geothlypis trichas
    # Count: 2
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  39. American Redstart Setophaga ruticilla
    # Count: 2
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  40. Yellow Warbler Setophaga petechia
    # Count: 1
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  41. Northern Cardinal Cardinalis cardinalis
    # Count: 2
    Date:
    Observer: Prashanth Srinivasan
    Location: Horicon Marsh SWA--Greenhead Impoundment
  42. Great Crested Flycatcher Myiarchus crinitus
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  43. American Crow Corvus brachyrhynchos
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  44. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  45. Marsh Wren Cistothorus palustris
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  46. Eastern Bluebird Sialia sialis
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  47. Trumpeter Swan Cygnus buccinator
    # Count: 1
    Date:
    Observer: Scott Stalheim
    Location: Horicon Marsh SWA--Greenhead Impoundment
  48. Blue-winged Teal Spatula discors
    # Count: 3
    Date:
    Observer: Scott Stalheim
    Location: Horicon Marsh SWA--Greenhead Impoundment
  49. Mallard Anas platyrhynchos
    # Count: 3
    Date:
    Observer: Scott Stalheim
    Location: Horicon Marsh SWA--Greenhead Impoundment
  50. Redhead Aythya americana
    # Count: 1
    Date:
    Observer: Scott Stalheim
    Location: Horicon Marsh SWA--Greenhead Impoundment
  51. Bald Eagle Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: Scott Stalheim
    Location: Horicon Marsh SWA--Greenhead Impoundment
  52. Northern Harrier Circus hudsonius
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  53. Red-bellied Woodpecker Melanerpes carolinus
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  54. Least Flycatcher Empidonax minimus
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  55. Warbling Vireo Vireo gilvus
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  56. Field Sparrow Spizella pusilla
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  57. White-crowned Sparrow Zonotrichia leucophrys
    # Count: 2
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  58. Wilson's Warbler Cardellina pusilla
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  59. Rose-breasted Grosbeak Pheucticus ludovicianus
    # Count: 2
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  60. Baltimore Oriole Icterus galbula
    # Count: 1
    Date:
    Observer: Lauren Dolehide
    Location: Horicon Marsh SWA--Greenhead Impoundment
  61. Northern Waterthrush Parkesia noveboracensis
    # Count: 1
    Date:
    Observer: Lauren Dolehide
    Location: Horicon Marsh SWA--Greenhead Impoundment
  62. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: K K
    Location: Horicon Marsh SWA--Greenhead Impoundment
  63. Wood Duck Aix sponsa
    # Count: 3
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  64. Gadwall Mareca strepera
    # Count: 3
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  65. American Wigeon Mareca americana
    # Count: 2
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  66. Northern Pintail Anas acuta
    # Count: 2
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  67. Green-winged Teal Anas crecca
    # Count: 40
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  68. Ring-necked Duck Aythya collaris
    # Count: 2
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  69. Bufflehead Bucephala albeola
    # Count: 2
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  70. Sora Porzana carolina
    # Count: 1
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  71. Pied-billed Grebe Podilymbus podiceps
    # Count: 1
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  72. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  73. Eastern Phoebe Sayornis phoebe
    # Count: 1
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  74. American Tree Sparrow Spizelloides arborea
    # Count: 1
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  75. Rusty Blackbird Euphagus carolinus
    # Count: 60
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  76. Yellow-rumped Warbler Setophaga coronata
    # Count: 2
    Date:
    Observer: Joseph Phipps
    Location: Horicon Marsh SWA--Greenhead Impoundment
  77. Ruff Calidris pugnax
    # Count: 1
    Date:
    Observer: WSORC Data
    Location: Horicon Marsh SWA--Greenhead Impoundment
  78. Hooded Merganser Lophodytes cucullatus
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  79. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  80. Northern Shrike Lanius borealis
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  81. Barred Owl Strix varia
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  82. Dark-eyed Junco Junco hyemalis
    # Count: 1
    Date:
    Observer: Christine Van Wassenhove
    Location: Horicon Marsh SWA--Greenhead Impoundment
  83. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  84. Red-headed Woodpecker Melanerpes erythrocephalus
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  85. Horned Lark Eremophila alpestris
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  86. Ruby-crowned Kinglet Corthylio calendula
    # Count: 2
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  87. Brown Creeper Certhia americana
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  88. Palm Warbler Setophaga palmarum
    # Count: X
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  89. Ruby-throated Hummingbird Archilochus colubris
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  90. Pileated Woodpecker Dryocopus pileatus
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  91. Blackpoll Warbler Setophaga striata
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  92. Wild Turkey Meleagris gallopavo
    # Count: 14
    Date:
    Observer: Monica Causey
    Location: Horicon Marsh SWA--Greenhead Impoundment
  93. Common Nighthawk Chordeiles minor
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  94. Tennessee Warbler Leiothlypis peregrina
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  95. Olive-sided Flycatcher Contopus cooperi
    # Count: 1
    Date:
    Observer: mengqi yu
    Location: Horicon Marsh SWA--Greenhead Impoundment
  96. Rock Pigeon Columba livia
    # Count: 20
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  97. Virginia Rail Rallus limicola
    # Count: 1
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  98. Least Sandpiper Calidris minutilla
    # Count: 3
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  99. Ring-billed Gull Larus delawarensis
    # Count: X
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  100. Black Tern Chlidonias niger
    # Count: 6
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  101. Double-crested Cormorant Nannopterum auritum
    # Count: 40
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  102. Red-eyed Vireo Vireo olivaceus
    # Count: 1
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  103. Northern Rough-winged Swallow Stelgidopteryx serripennis
    # Count: 6
    Date:
    Observer: Kira Dayton
    Location: Horicon Marsh SWA--Greenhead Impoundment
  104. Willow Flycatcher Empidonax traillii
    # Count: 1
    Date:
    Observer: Kelli Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  105. House Finch Haemorhous mexicanus
    # Count: X
    Date:
    Observer: Danny Fritz
    Location: Horicon Marsh SWA--Greenhead Impoundment
  106. Black-billed Cuckoo Coccyzus erythropthalmus
    # Count: X
    Date:
    Observer: Tom Pfotenhauer
    Location: Horicon Marsh SWA--Greenhead Impoundment
  107. Cooper's Hawk Astur cooperii
    # Count: X
    Date:
    Observer: Tom Pfotenhauer
    Location: Horicon Marsh SWA--Greenhead Impoundment
  108. Ovenbird Seiurus aurocapilla
    # Count: X
    Date:
    Observer: Tom Pfotenhauer
    Location: Horicon Marsh SWA--Greenhead Impoundment
  109. Scarlet Tanager Piranga olivacea
    # Count: X
    Date:
    Observer: Tom Pfotenhauer
    Location: Horicon Marsh SWA--Greenhead Impoundment
  110. Veery Catharus fuscescens
    # Count: 2
    Date:
    Observer: Tracy Moore
    Location: Horicon Marsh SWA--Greenhead Impoundment
  111. Black-and-white Warbler Mniotilta varia
    # Count: 1
    Date:
    Observer: Tracy Moore
    Location: Horicon Marsh SWA--Greenhead Impoundment
  112. Chestnut-sided Warbler Setophaga pensylvanica
    # Count: 1
    Date:
    Observer: Tracy Moore
    Location: Horicon Marsh SWA--Greenhead Impoundment
  113. Swainson's Thrush Catharus ustulatus
    # Count: 1
    Date:
    Observer: Kelli Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  114. Magnolia Warbler Setophaga magnolia
    # Count: 1
    Date:
    Observer: Kelli Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  115. Osprey Pandion haliaetus
    # Count: 2
    Date:
    Observer: Daniel Rawley
    Location: Horicon Marsh SWA--Greenhead Impoundment
  116. Nashville Warbler Leiothlypis ruficapilla
    # Count: 1
    Date:
    Observer: Daniel Rawley
    Location: Horicon Marsh SWA--Greenhead Impoundment
  117. Ring-necked Pheasant Phasianus colchicus
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  118. Yellow-bellied Sapsucker Sphyrapicus varius
    # Count: X
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  119. Merlin Falco columbarius
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  120. Golden-crowned Kinglet Regulus satrapa
    # Count: X
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  121. Fox Sparrow Passerella iliaca
    # Count: 8
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  122. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  123. Indigo Bunting Passerina cyanea
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  124. Chipping Sparrow Spizella passerina
    # Count: 2
    Date:
    Observer: Ted Keyel
    Location: Horicon Marsh SWA--Greenhead Impoundment
  125. Clay-colored Sparrow Spizella pallida
    # Count: 1
    Date:
    Observer: Ted Keyel
    Location: Horicon Marsh SWA--Greenhead Impoundment
  126. Yellow-billed Cuckoo Coccyzus americanus
    # Count: 1
    Date:
    Observer: Liz Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  127. Alder Flycatcher Empidonax alnorum
    # Count: 1
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  128. Yellow-throated Vireo Vireo flavifrons
    # Count: 1
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  129. Sedge Wren Cistothorus stellaris
    # Count: 3
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  130. Wood Thrush Hylocichla mustelina
    # Count: 1
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  131. White-throated Sparrow Zonotrichia albicollis
    # Count: 2
    Date:
    Observer: a tindell
    Location: Horicon Marsh SWA--Greenhead Impoundment
  132. Savannah Sparrow Passerculus sandwichensis
    # Count: 3
    Date:
    Observer: a tindell
    Location: Horicon Marsh SWA--Greenhead Impoundment
  133. Dickcissel Spiza americana
    # Count: 1
    Date:
    Observer: Todd Brown
    Location: Horicon Marsh SWA--Greenhead Impoundment
  134. Orchard Oriole Icterus spurius
    # Count: 2
    Date:
    Observer: Nancy Stanford
    Location: Horicon Marsh SWA--Greenhead Impoundment
  135. Hermit Thrush Catharus guttatus
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  136. American Woodcock Scolopax minor
    # Count: 5
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  137. American Bittern Botaurus lentiginosus
    # Count: 2
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  138. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  139. Brown Thrasher Toxostoma rufum
    # Count: 1
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  140. Red-breasted Nuthatch Sitta canadensis
    # Count: 2
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  141. Forster's Tern Sterna forsteri
    # Count: 2
    Date:
    Observer: Davor Grgic
    Location: Horicon Marsh SWA--Greenhead Impoundment
  142. Lincoln's Sparrow Melospiza lincolnii
    # Count: 1
    Date:
    Observer: Kyle Maust
    Location: Horicon Marsh SWA--Greenhead Impoundment
  143. Least Bittern Botaurus exilis
    # Count: 1
    Date:
    Observer: Carl Schwartz
    Location: Horicon Marsh SWA--Greenhead Impoundment
  144. Ruddy Duck Oxyura jamaicensis
    # Count: 10
    Date:
    Observer: Kelli Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  145. Caspian Tern Hydroprogne caspia
    # Count: 1
    Date:
    Observer: Kelli Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  146. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 2
    Date:
    Observer: Karl Hayes
    Location: Horicon Marsh SWA--Greenhead Impoundment
  147. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 13
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  148. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: 2
    Date:
    Observer: Brendan Beers
    Location: Horicon Marsh SWA--Greenhead Impoundment
  149. Bobolink Dolichonyx oryzivorus
    # Count: 3
    Date:
    Observer: Brendan Beers
    Location: Horicon Marsh SWA--Greenhead Impoundment
  150. American Herring Gull Larus smithsonianus
    # Count: 4
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  151. Bank Swallow Riparia riparia
    # Count: 4
    Date:
    Observer: Shepard Frost
    Location: Horicon Marsh SWA--Greenhead Impoundment
  152. Blue-headed Vireo Vireo solitarius
    # Count: 1
    Date:
    Observer: Jennifer Scholze
    Location: Horicon Marsh SWA--Greenhead Impoundment
  153. Black-throated Green Warbler Setophaga virens
    # Count: 2
    Date:
    Observer: Jennifer Scholze
    Location: Horicon Marsh SWA--Greenhead Impoundment
  154. Red-breasted Merganser Mergus serrator
    # Count: 1
    Date:
    Observer: Jim Shotsberger
    Location: Horicon Marsh SWA--Greenhead Impoundment
  155. Northern Parula Setophaga americana
    # Count: 2
    Date:
    Observer: Nancy Stanford
    Location: Horicon Marsh SWA--Greenhead Impoundment
  156. Eastern Meadowlark Sturnella magna
    # Count: 2
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  157. Chimney Swift Chaetura pelagica
    # Count: 1
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  158. Henslow's Sparrow Centronyx henslowii
    # Count: 2
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  159. Golden-winged Warbler Vermivora chrysoptera
    # Count: X
    Date:
    Observer: Alec Anderson
    Location: Horicon Marsh SWA--Greenhead Impoundment
  160. Blue-winged Warbler Vermivora cyanoptera
    # Count: X
    Date:
    Observer: Alec Anderson
    Location: Horicon Marsh SWA--Greenhead Impoundment
  161. Tundra Swan Cygnus columbianus
    # Count: 60
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  162. Rough-legged Hawk Buteo lagopus
    # Count: 1
    Date:
    Observer: Matt Herzmann
    Location: Horicon Marsh SWA--Greenhead Impoundment
  163. Common Gallinule Gallinula galeata
    # Count: 1
    Date:
    Observer: Amy Staffen
    Location: Horicon Marsh SWA--Greenhead Impoundment
  164. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 60
    Date:
    Observer: John Romano
    Location: Horicon Marsh SWA--Greenhead Impoundment
  165. Common Merganser Mergus merganser
    # Count: 1
    Date:
    Observer: Marge Anderson
    Location: Horicon Marsh SWA--Greenhead Impoundment

Additional Taxa (13)

  1. swallow sp. Hirundinidae sp.
    # Count: 2
    Date:
    Observer: Leslie Andrich
    Location: Horicon Marsh SWA--Greenhead Impoundment
  2. Downy/Hairy Woodpecker Dryobates pubescens/villosus
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  3. blackbird sp. Icteridae sp.
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  4. new world sparrow sp. Passerellidae sp.
    # Count: X
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  5. new world warbler sp. Parulidae sp.
    # Count: 1
    Date:
    Observer: Sandy Vorpahl
    Location: Horicon Marsh SWA--Greenhead Impoundment
  6. Broad-winged/Red-shouldered Hawk Buteo platypterus/lineatus
    # Count: 1
    Date:
    Observer: James Shead
    Location: Horicon Marsh SWA--Greenhead Impoundment
  7. Catharus sp. Catharus sp.
    # Count: 1
    Date:
    Observer: Kelli Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  8. falcon sp. Falco sp.
    # Count: 1
    Date:
    Observer: Alex O’Brien
    Location: Horicon Marsh SWA--Greenhead Impoundment
  9. duck sp. Anatidae (duck sp.)
    # Count: 5
    Date:
    Observer: a tindell
    Location: Horicon Marsh SWA--Greenhead Impoundment
  10. gull sp. Larinae sp.
    # Count: 15
    Date:
    Observer: a tindell
    Location: Horicon Marsh SWA--Greenhead Impoundment
  11. passerine sp. Passeriformes sp.
    # Count: 6
    Date:
    Observer: a tindell
    Location: Horicon Marsh SWA--Greenhead Impoundment
  12. Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmus
    # Count: 1
    Date:
    Observer: Jeff Bahls
    Location: Horicon Marsh SWA--Greenhead Impoundment
  13. peep sp. Calidris sp. (peep sp.)
    # Count: 1
    Date:
    Observer: Marge Anderson
    Location: Horicon Marsh SWA--Greenhead Impoundment