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Chase Lake National Wildlife Refuge - Woodworth, North Dakota
   

American White Pelican Surveys

Chase Lake NWR, American White Pelican Colony Nesting Effort, 1972 - 2003
YearSmall
Island
#1
Large
Island
#2
Peninsula
– Island
#3
SE
Shore
#4
Mainland
SE
Shore
#5
SE
Shore
#6
Mainland
NW Shore
#7
TotalNumber of
Breeding
Birds
Date of
Census
19721,5673,260     4,8279,65428-May
19731,8802,031     3,9117,82227-May
19741,8911,191     3,0826,16425-May
19752,4561,765     4,2218,44224-May
19761,8492,906     4,7559,51031-May
19779313,688     4,6199,23829-May
19786593,930     4,5899,1782-Jun
19793833,668     4,0518,10230-May
19801,3714,771     6,14212,2843-Jun
19811,5444,282     5,82611,6523-Jun
19821,3893,879     5,26810,5361-Jun
19832,2533,039     5,29210,58414-Jun
19841,3312,590     3,9217,84225-Jun
1985       No Survey Conducted
19862,0872,908     4,9959,990?
19871,8565,283     7,13914,278?
19883,1005,540     8,64017,280?
19892,3134,316     6,62913,258?
19901,8243,960     5,78411,568?
1991       No Survey Conducted
19922,5643,412     5,97611,9525-Jun
19933,4725,081     8,55317,10626-May
19944,3084,237     8,54517,09027-May
19951,7973,8883,495    9,18018,3602-Jun
19965855398,657    9,78119,5625-Jun
19973809,144    9,18218,3645-Jun
19986107,755 4,465  12,28124,56211-Jun
1999031,474   13,31814,79529,5902-Jun
2000003,073 2,937 11,72317,73335,466 2-Jun
2001002,187338  12,37114,89629,79231-May
2002003,9391,491 79210,66116,88333,76628-May
2003001,653 429  6,5466,11914,74729,4948-June
2005     1,682 153   7,590  9,425 18,850 31-May
2006    3,202    14,100  17,302 34,604 30-May
2007    1,157     10,105   11,262 22,524 6-June


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