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Diet of Common Guillemot chicks
Common Guillemot
Measures of chick diet


Table 1: Species composition of fish fed to chicks from published data

	No of   % of    No of   % of    Location        Source
        Sprat  Sprat    Sandeel Sandeel

2006-11   9     33%      18     66%     Lundy           Anderson et al. (2014)

1986	 86	52%	 78     48%     Lundy           Hatchwell, et al. (1992)
1986	251	91%	 26      9%     Skomer          Hatchwell, et al. (1992)
1985	 44     19%     190     81%	Lundy           Hatchwell, et al. (1992)
1985	304	68%	146     32%     Skomer          Hatchwell, et al. (1992)


Table 2: Size composition of fish fed to chicks from published data

	No of   % of    No of   % of    No of   % of    Location        Source
        Small   Small   Medium  Medium  Large   Large

1986	76      46%      88     54%      0      -       Lundy           Hatchwell, et al. (1992)
1986	13       5%     178     64%      87     31%     Skomer          Hatchwell, et al. (1992)
1985	44      19%     130     56%      60     26%     Lundy           Hatchwell, et al. (1992)
1986	83      20%     217     51%     123     29%     Skomer          Hatchwell, et al. (1992)

Prey size classes (Hatchwell, et al. 1992):
Clupeids: Small 80-100mm, Medium 100-120mm, Large 120-140mm
Sandeels: Small 80-110mm, Medium 110-140mm, Large 140-170mm


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