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Rocky Mountain Arsenal NWR--Lake Ladora

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Bird List

Updated ~6 seconds ago
236 All Years 132 This Year 2025 117 This Month Apr 2025
Last Observed First Observed High Count

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  1. Species Name
    Count
    Date
    Observer
    Location

Native and Naturalized (116)

  1. Lesser Goldfinch Spinus psaltria
    # Count: 1
    Date:
    Observer: Lily Pad
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  2. Cooper's Hawk Astur cooperii
    # Count: 2
    Date:
    Observer: Helen Berkman
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  3. Sage Thrasher Oreoscoptes montanus
    # Count: 1
    Date:
    Observer: Carly Crow
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  4. Least Sandpiper Calidris minutilla
    # Count: 2
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  5. Spotted Sandpiper Actitis macularius
    # Count: 2
    Date:
    Observer: Dylan V
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  6. Spotted Towhee Pipilo maculatus
    # Count: 1
    Date:
    Observer: Dylan V
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  7. Willet Tringa semipalmata
    # Count: 8
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  8. Common Raven Corvus corax
    # Count: 1
    Date:
    Observer: Emily S
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  9. Vesper Sparrow Pooecetes gramineus
    # Count: 1
    Date:
    Observer: Keri Bowling
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  10. Savannah Sparrow Passerculus sandwichensis
    # Count: 1
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  11. House Sparrow Passer domesticus
    # Count: X
    Date:
    Observer: Jennifer Mercer
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  12. Golden-crowned Kinglet Regulus satrapa
    # Count: 1
    Date:
    Observer: Garrett Carlson
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  13. Blue-gray Gnatcatcher Polioptila caerulea
    # Count: 1
    Date:
    Observer: Garrett Carlson
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  14. Chipping Sparrow Spizella passerina
    # Count: 1
    Date:
    Observer: Colin Woolley
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  15. Yellow-rumped Warbler Setophaga coronata
    # Count: 2
    Date:
    Observer: Colin Woolley
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  16. Snowy Egret Egretta thula
    # Count: 1
    Date:
    Observer: Greg Harrington
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  17. Brewer's Blackbird Euphagus cyanocephalus
    # Count: 2
    Date:
    Observer: Greg Harrington
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  18. Violet-green Swallow Tachycineta thalassina
    # Count: 2
    Date:
    Observer: Isaac Boardman
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  19. Cliff Swallow Petrochelidon pyrrhonota
    # Count: 1
    Date:
    Observer: Isaac Boardman
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  20. Brown-headed Cowbird Molothrus ater
    # Count: 2
    Date:
    Observer: Lily Pad
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  21. Marbled Godwit Limosa fedoa
    # Count: 1
    Date:
    Observer: Margaret Wolf
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  22. Townsend's Solitaire Myadestes townsendi
    # Count: 1
    Date:
    Observer: Amy Walsh
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  23. House Finch Haemorhous mexicanus
    # Count: 2
    Date:
    Observer: Amy Walsh
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  24. Semipalmated Plover Charadrius semipalmatus
    # Count: 1
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  25. Mountain Bluebird Sialia currucoides
    # Count: 2
    Date:
    Observer: Eric Hynes
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  26. Great Egret Ardea alba
    # Count: 1
    Date:
    Observer: Chris Gilbert
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  27. Northern Pintail Anas acuta
    # Count: 2
    Date:
    Observer: Brian Genge
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  28. Canvasback Aythya valisineria
    # Count: 1
    Date:
    Observer: Brian Genge
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  29. Long-billed Dowitcher Limnodromus scolopaceus
    # Count: 1
    Date:
    Observer: Todd Deininger
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  30. Lesser Yellowlegs Tringa flavipes
    # Count: 2
    Date:
    Observer: Todd Deininger
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  31. Caspian Tern Hydroprogne caspia
    # Count: 1
    Date:
    Observer: Lily Pad
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  32. Wood Duck Aix sponsa
    # Count: 2
    Date:
    Observer: Gilberto Camargo Tietjen
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  33. Solitary Sandpiper Tringa solitaria
    # Count: 1
    Date:
    Observer: Allen Hendrick 1+864.360.5468
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  34. Loggerhead Shrike Lanius ludovicianus
    # Count: 1
    Date:
    Observer: Allen Hendrick 1+864.360.5468
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  35. Cedar Waxwing Bombycilla cedrorum
    # Count: 1
    Date:
    Observer: Allen Hendrick 1+864.360.5468
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  36. Peregrine Falcon Falco peregrinus
    # Count: 1
    Date:
    Observer: Jason B Bidgood
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  37. Blue Jay Cyanocitta cristata
    # Count: 1
    Date:
    Observer: Jason B Bidgood
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  38. American Pipit Anthus rubescens
    # Count: 10
    Date:
    Observer: Jason B Bidgood
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  39. Swainson's Hawk Buteo swainsoni
    # Count: 2
    Date:
    Observer: Graham Ray
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  40. Marsh Wren Cistothorus palustris
    # Count: 1
    Date:
    Observer: Greg Harrington
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  41. Tree Swallow Tachycineta bicolor
    # Count: 2
    Date:
    Observer: Mike Serruto
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  42. White-faced Ibis Plegadis chihi
    # Count: 10
    Date:
    Observer: JM Fleischer
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  43. Great Horned Owl Bubo virginianus
    # Count: 1
    Date:
    Observer: Dylan Gibson
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  44. Burrowing Owl Athene cunicularia
    # Count: 2
    Date:
    Observer: Dylan Gibson
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  45. Barn Swallow Hirundo rustica
    # Count: 1
    Date:
    Observer: Cheryl Johnson
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  46. Virginia Rail Rallus limicola
    # Count: 1
    Date:
    Observer: Carly Crow
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  47. Black-necked Stilt Himantopus mexicanus
    # Count: 10
    Date:
    Observer: LEO SNEAD
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  48. Black-crowned Night Heron Nycticorax nycticorax
    # Count: 1
    Date:
    Observer: LEO SNEAD
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  49. Golden Eagle Aquila chrysaetos
    # Count: 1
    Date:
    Observer: LEO SNEAD
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  50. American Goldfinch Spinus tristis
    # Count: 1
    Date:
    Observer: Jan Eckardt Butler
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  51. American Herring Gull Larus smithsonianus
    # Count: 1
    Date:
    Observer: Monika Shepard
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  52. Rock Wren Salpinctes obsoletus
    # Count: 1
    Date:
    Observer: Jack Robinson
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  53. Yellow-headed Blackbird Xanthocephalus xanthocephalus
    # Count: 1
    Date:
    Observer: Riley Morris
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  54. California Gull Larus californicus
    # Count: 3
    Date:
    Observer: Jordan Gerue
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  55. Eared Grebe Podiceps nigricollis
    # Count: 1
    Date:
    Observer: Kate Millman
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  56. Belted Kingfisher Megaceryle alcyon
    # Count: 1
    Date:
    Observer: Lily Pad
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  57. Greater Scaup Aythya marila
    # Count: 8
    Date:
    Observer: Mark Dettling
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  58. Bonaparte's Gull Chroicocephalus philadelphia
    # Count: 3
    Date:
    Observer: Mark Dettling
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  59. Western Grebe Aechmophorus occidentalis
    # Count: 2
    Date:
    Observer: Mark Dettling
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  60. Downy Woodpecker Dryobates pubescens
    # Count: 1
    Date:
    Observer: Mark Dettling
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  61. Black-capped Chickadee Poecile atricapillus
    # Count: 1
    Date:
    Observer: Mark Dettling
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  62. Wild Turkey Meleagris gallopavo
    # Count: 2
    Date:
    Observer: Mark Pryshlak
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  63. Franklin's Gull Leucophaeus pipixcan
    # Count: 1
    Date:
    Observer: Mark Pryshlak
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  64. American White Pelican Pelecanus erythrorhynchos
    # Count: 10
    Date:
    Observer: Mark Pryshlak
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  65. Turkey Vulture Cathartes aura
    # Count: 2
    Date:
    Observer: Mark Pryshlak
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  66. Osprey Pandion haliaetus
    # Count: 1
    Date:
    Observer: Mark Pryshlak
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  67. Northern Harrier Circus hudsonius
    # Count: 1
    Date:
    Observer: Mark Pryshlak
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  68. Rock Pigeon Columba livia
    # Count: 8
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  69. Long-billed Curlew Numenius americanus
    # Count: 1
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  70. Pied-billed Grebe Podilymbus podiceps
    # Count: 1
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  71. Hairy Woodpecker Dryobates villosus
    # Count: 1
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  72. American Crow Corvus brachyrhynchos
    # Count: 5
    Date:
    Observer: George Ho
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  73. Blue-winged Teal Spatula discors
    # Count: 1
    Date:
    Observer: Lily Pad
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  74. Northern Shoveler Spatula clypeata
    # Count: X
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  75. American Wigeon Mareca americana
    # Count: X
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  76. Common Merganser Mergus merganser
    # Count: X
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  77. Ruddy Duck Oxyura jamaicensis
    # Count: X
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  78. Eurasian Collared-Dove Streptopelia decaocto
    # Count: X
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  79. Double-crested Cormorant Nannopterum auritum
    # Count: 2
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  80. Red-tailed Hawk Buteo jamaicensis
    # Count: 1
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  81. Northern Flicker Colaptes auratus
    # Count: 2
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  82. Say's Phoebe Sayornis saya
    # Count: 2
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  83. Black-billed Magpie Pica hudsonia
    # Count: 6
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  84. Horned Lark Eremophila alpestris
    # Count: 2
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  85. Dark-eyed Junco Junco hyemalis
    # Count: 5
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  86. White-crowned Sparrow Zonotrichia leucophrys
    # Count: X
    Date:
    Observer: Frank Nicoletti
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  87. Canada Goose Branta canadensis
    # Count: 30
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  88. Cinnamon Teal Spatula cyanoptera
    # Count: 2
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  89. Gadwall Mareca strepera
    # Count: 6
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  90. Mallard Anas platyrhynchos
    # Count: 4
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  91. Green-winged Teal Anas crecca
    # Count: 2
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  92. Redhead Aythya americana
    # Count: 8
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  93. Ring-necked Duck Aythya collaris
    # Count: 4
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  94. Lesser Scaup Aythya affinis
    # Count: 16
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  95. Bufflehead Bucephala albeola
    # Count: 10
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  96. Common Goldeneye Bucephala clangula
    # Count: 6
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  97. Hooded Merganser Lophodytes cucullatus
    # Count: 4
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  98. Mourning Dove Zenaida macroura
    # Count: 3
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  99. American Coot Fulica americana
    # Count: 40
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  100. American Avocet Recurvirostra americana
    # Count: 2
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  101. Killdeer Charadrius vociferus
    # Count: 6
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  102. Wilson's Snipe Gallinago delicata
    # Count: 3
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  103. Greater Yellowlegs Tringa melanoleuca
    # Count: 2
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  104. Ring-billed Gull Larus delawarensis
    # Count: 4
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  105. Horned Grebe Podiceps auritus
    # Count: 2
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  106. Great Blue Heron Ardea herodias
    # Count: 4
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  107. Bald Eagle Haliaeetus leucocephalus
    # Count: 1
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  108. American Kestrel Falco sparverius
    # Count: 1
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  109. White-breasted Nuthatch Sitta carolinensis
    # Count: 1
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  110. European Starling Sturnus vulgaris
    # Count: X
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  111. American Robin Turdus migratorius
    # Count: 6
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  112. Song Sparrow Melospiza melodia
    # Count: 1
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  113. Western Meadowlark Sturnella neglecta
    # Count: 1
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  114. Red-winged Blackbird Agelaius phoeniceus
    # Count: 100
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  115. Common Grackle Quiscalus quiscula
    # Count: 8
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  116. Great-tailed Grackle Quiscalus mexicanus
    # Count: 1
    Date:
    Observer: Bez Bezuidenhout
    Location: Rocky Mountain Arsenal NWR--Lake Ladora

Exotic: Provisional (1)

  1. Ring-necked Pheasant Phasianus colchicus
    # Count: 1
    Date:
    Observer: Joseph Caruso
    Location: Rocky Mountain Arsenal NWR--Lake Ladora

Additional Taxa (8)

  1. Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianum
    # Count: 1
    Date:
    Observer: Joan Holmes
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  2. new world sparrow sp. Passerellidae sp.
    # Count: 4
    Date:
    Observer: Dylan V
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  3. gull sp. Larinae sp.
    # Count: 2
    Date:
    Observer: Emily S
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  4. Buteo sp. Buteo sp.
    # Count: 1
    Date:
    Observer: Brian Genge
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  5. swallow sp. Hirundinidae sp.
    # Count: 3
    Date:
    Observer: Zak Hepler
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  6. Horned/Eared Grebe Podiceps auritus/nigricollis
    # Count: 1
    Date:
    Observer: Rebecca Laroche
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  7. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    # Count: 1
    Date:
    Observer: Monika Shepard
    Location: Rocky Mountain Arsenal NWR--Lake Ladora
  8. Greater/Lesser Scaup Aythya marila/affinis
    # Count: 6
    Date:
    Observer: Andrew Wertheimer
    Location: Rocky Mountain Arsenal NWR--Lake Ladora