Illustrated Checklist

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Native and Naturalized (140)

  1. Last observed by Mark L. Hoffman on 13 Dec 2008
  2. Last observed by Mark L. Hoffman on 21 Oct 2006
  3. Last observed by Mark L. Hoffman on 20 Mar 2010
  4. Last observed by Jim Stasz on 18 Aug 2002
  5. Last observed by Nancy Magnusson on 25 Apr 1992
  6. Last observed by Sam Dyke (Admin R. Ostrowski) on 10 Sep 1995
  7. Last observed by Lydia Thompson on 30 Jan 1983
  8. Last observed by Kevin Graff on 19 Feb 2023
  9. Last observed by Kevin Graff on 4 Feb 2024
  10. Last observed by Kevin Graff on 3 Feb 2018
  11. Last observed by Fred Shaffer on 13 Dec 2008
  12. Last observed by Dr. James Gibson on 3 Feb 1974
  13. Last observed by Lydia Thompson on 30 Jan 1983
  14. Last observed by Heather McSharry on 4 Feb 2018
  15. Last observed by Maryland Pelagic Data on 25 Mar 1973
  16. Last observed by Douglas Lister on 4 May 1991
  17. Last observed by Mark L. Hoffman on 11 Oct 1992
  18. Last observed by Fred Shaffer on 16 Aug 2003
  19. Last observed by Mike Ostrowski on 12 May 2012
  20. Last observed by Elaine Hendricks on 12 May 2012
  21. Last observed by Kevin Graff on 19 Feb 2023
  22. Last observed by Elaine Hendricks on 12 May 2012
  23. Last observed by Dr. James Gibson on 26 Sep 1976
  24. Last observed by Elaine Hendricks on 12 May 2012
  25. Last observed by James Moore (Maryland) on 12 May 2012
  26. Last observed by Fred Shaffer on 12 May 2012
  27. Last observed by Fred Shaffer on 12 May 2012
  28. Last observed by Nancy Magnusson on 25 Apr 1992
  29. Last observed by Mark L. Hoffman on 7 May 1978
  30. Last observed by David Palmer on 17 Aug 1991
  31. Last observed by Sam Dyke (Admin R. Ostrowski) on 26 Feb 1995
  32. Last observed by Mark L. Hoffman on 15 Aug 2010
  33. Last observed by Kevin Graff on 4 Feb 2024
  34. Last observed by Kevin Graff on 4 Feb 2024
  35. Last observed by Kevin Graff on 4 Feb 2024
  36. Last observed by Kevin Graff on 12 Feb 2022
  37. Last observed by Kevin Graff on 4 Feb 2024
  38. Last observed by Mark L. Hoffman on 29 Nov 1992
  39. Last observed by Mark L. Hoffman on 9 May 1976
  40. Last observed by Kevin Graff on 15 Aug 2021
  41. Last observed by Kevin Graff on 4 Feb 2024
  42. Last observed by Kevin Graff on 4 Feb 2024
  43. Last observed by Kevin Graff on 4 Feb 2024
  44. Last observed by Mark L. Hoffman on 5 Feb 2011
  45. Last observed by Kevin Graff on 4 Feb 2024
  46. Last observed by Johnnie Ramos on 23 Dec 2020
  47. Last observed by Nancy Magnusson on 25 Apr 1992
  48. Last observed by Kevin Graff on 15 Aug 2021
  49. Last observed by Fred Shaffer on 12 May 2012
  50. Last observed by Kevin Graff on 15 Aug 2021
  51. Last observed by Fred Shaffer on 12 May 2012
  52. Last observed by Fred Shaffer on 12 May 2012
  53. Last observed by Frode Jacobsen on 26 Aug 2006
  54. Last observed by Kevin Graff on 15 Aug 2021
  55. Last observed by Byron Swift on 7 Aug 1982
  56. Last observed by Kevin Graff on 15 Aug 2021
  57. Last observed by Kevin Graff on 4 Feb 2024
  58. Last observed by Kevin Graff on 4 Feb 2024
  59. Last observed by Kevin Graff on 4 Feb 2024
  60. Last observed by Kevin Graff on 15 Aug 2021
  61. Last observed by Kevin Graff on 12 Feb 2022
  62. Last observed by Robert Walker on 29 Dec 2023
  63. Last observed by Kevin Graff on 4 Feb 2024
  64. Last observed by William Adams on 3 Feb 2018
  65. Last observed by Kevin Graff on 15 Aug 2021
  66. Last observed by Byron Swift on 7 Aug 1982
  67. Last observed by Marshall Iliff on 4 May 1991
  68. Last observed by Jared Fisher on 12 May 2012
  69. Last observed by Marshall Iliff on 4 May 1991
  70. Last observed by Kevin Graff on 30 Sep 2012
  71. Last observed by Kevin Graff on 24 Jun 2020
  72. Last observed by Kevin Graff on 30 Sep 2012
  73. Last observed by Fred Shaffer on 3 Oct 2020
  74. Last observed by Kevin Graff on 30 Sep 2012
  75. Last observed by Kevin Graff on 30 Sep 2012
  76. Last observed by Jim Stasz on 4 Jun 2005
  77. Last observed by Michael O'Brien on 4 May 1991
  78. Last observed by Fred Shaffer on 12 May 2012
  79. Last observed by Kevin Graff on 15 Aug 2021
  80. Last observed by Kevin Graff on 30 Sep 2012
  81. Last observed by Douglas Lister on 4 May 1991
  82. Last observed by Doug McWhirter on 26 Sep 1976
  83. Last observed by Mark L. Hoffman on 21 Oct 2006
  84. Last observed by David Walbeck on 28 Sep 1991
  85. Last observed by Mark L. Hoffman on 20 Mar 2011
  86. Last observed by Joe Hanfman on 17 Nov 2012
  87. Last observed by Bruce Hill on 6 Oct 1990
  88. Last observed by Mark L. Hoffman on 21 Oct 2006
  89. Last observed by J.B. Churchill on 16 Nov 2002
  90. Last observed by Mark L. Hoffman on 20 Mar 2010
  91. Last observed by Mark L. Hoffman on 7 May 1978
  92. Last observed by Mark L. Hoffman on 21 Oct 2006
  93. Last observed by Mark L. Hoffman on 21 Oct 2006
  94. Last observed by Michael O'Brien on 11 Sep 1982
  95. Last observed by Mark L. Hoffman on 24 Aug 2007
  96. Last observed by Nancy Magnusson on 25 Apr 1992
  97. Last observed by Mark L. Hoffman on 24 Aug 2007
  98. Last observed by Michael O'Brien on 11 Sep 1982
  99. Last observed by Mark L. Hoffman on 23 Oct 1994
  100. Last observed by Maryland Pelagic Data on 23 May 1970
  101. Last observed by Mark L. Hoffman on 18 Aug 1996
  102. Last observed by Fred Shaffer on 12 May 2012
  103. Last observed by Fred Shaffer on 3 Oct 2020
  104. Last observed by Kevin Graff on 30 Sep 2012
  105. Last observed by Mark L. Hoffman on 24 Aug 1980
  106. Last observed by Mark L. Hoffman on 24 Aug 2007

Hybrids (2)

  1. Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreus
    Last observed by Mark L. Hoffman on 5 Feb 2011
  2. Herring x Lesser Black-backed Gull (hybrid) Larus argentatus x fuscus
    Last observed by Kevin Graff on 12 Feb 2022

Additional Taxa (28)

  1. Greater/Lesser Scaup Aythya marila/affinis
    Last observed by Dr. James Gibson on 26 Sep 1976
  2. eider sp. Somateria sp.
    Last observed by Maryland Pelagic Data on 19 Jan 1973
  3. Surf/Black Scoter Melanitta perspicillata/americana
    Last observed by Kevin Graff on 4 Feb 2024
  4. scoter sp. Melanitta sp.
    Last observed by Mark L. Hoffman on 20 Mar 2011
  5. Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
    Last observed by Fred Shaffer on 12 May 2012
  6. Red/Red-necked Phalarope Phalaropus fulicarius/lobatus
    Last observed by Michael O'Brien on 25 Apr 1992
  7. phalarope sp. Phalaropus sp.
    Last observed by Kevin Graff on 30 Sep 2012
  8. Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
    Last observed by Mike Ostrowski on 12 May 2012
  9. peep sp. Calidris sp. (peep sp.)
    Last observed by Jim Stasz on 18 Aug 2002
  10. shorebird sp. Charadriiformes sp.
    Last observed by Michael O'Brien on 23 Nov 1991
  11. Long-tailed/Parasitic Jaeger Stercorarius longicaudus/parasiticus
    Last observed by Marshall Iliff on 6 Oct 1990
  12. Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinus
    Last observed by James Moore (Maryland) on 12 May 2012
  13. jaeger sp. Stercorarius sp. (jaeger sp.)
    Last observed by Mark L. Hoffman on 17 Nov 2012
  14. skua sp. Stercorarius sp. (skua sp.)
    Last observed by Michael O'Brien on 1 Mar 1992
  15. Thick-billed/Common Murre Uria lomvia/aalge
    Last observed by Sam Dyke (Admin R. Ostrowski) on 18 Feb 1996
  16. large alcid sp. Alca/Uria sp.
    Last observed by Kevin Graff on 4 Feb 2024
  17. alcid sp. Alcidae sp.
    Last observed by Kevin Graff on 19 Feb 2023
  18. white-winged gull sp. Larus sp. (white-winged gull sp.)
    Last observed by Joe Hanfman on 14 Feb 1982
  19. gull sp. Larinae sp.
    Last observed by David Walbeck on 28 Sep 1991
  20. Sterna sp. Sterna sp.
    Last observed by Mark L. Hoffman on 12 May 2012
  21. tern sp. Sterninae sp.
    Last observed by Eric R on 8 Aug 1992
  22. loon sp. Gavia sp.
    Last observed by Mark L. Hoffman on 20 Mar 2010
  23. storm-petrel sp. (white-rumped) Oceanitidae/Hydrobatidae sp. (white-rumped)
    Last observed by Michael O'Brien on 8 Aug 1992
  24. black-and-white shearwater sp. Puffinus sp. (black-and-white shearwater sp.)
    Last observed by Michael O'Brien on 6 Jun 1992
  25. shearwater sp. Procellariidae sp. (shearwater sp.)
    Last observed by Kevin Graff on 30 Sep 2012
  26. wren sp. Troglodytidae sp.
    Last observed by Fred Shaffer on 3 Oct 2020
  27. new world warbler sp. Parulidae sp.
    Last observed by Kevin Graff on 30 Sep 2012
  28. passerine sp. Passeriformes sp.
    Last observed by Mark L. Hoffman on 30 Sep 2012