Fig. 2. Mean feeding repellency associated with six concentrations ofAvipel1 seed treatments (A.I. 50% 9 10-anthraquinone;,, Arkion1 Life Sciences New Castle,,, DE USA) offered to red-winged blackbirds (Agelaiusphoeniceus) at the National Wildlife. Research Center in, Fort Collins Colorado (USA), November 2008. Repellency represents test consumption
relative, to averagePretreatment sunflower consumption (n = 9 - 10 blackbirds / concentration).
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