. The Canadian field-naturalist. Natural history; Sciences naturelles. 2007 Harriman, Pin, AND Larivii:i<i,: Do Scents Repel Predators? 151 10 1 08 - 1 " 1 ra 0-6 3 ( 1 w 04 L '' 02 • J [ 00-^^^ .^^^' ^o'" Coyote urine Treatment Figure 1. Daily nest survival (all eggs remaining in nest) of artificial duck nests treated with scents in Manitoba, 2002. Figure 3. Daily nest survival (all eggs remaining in nest) of natural duck nests treated with scents in Manitoba, 2002. Control o Coyote urine T Human hair — -V— - Worcestershire sauce • — 4 (Mothballs -^D-- 8 Mothballs. Exp
. The Canadian field-naturalist. Natural history; Sciences naturelles. 2007 Harriman, Pin, AND Larivii:i<i,: Do Scents Repel Predators? 151 10 1 08 - 1 " 1 ra 0-6 3 ( 1 w 04 L '' 02 • J [ 00-^^^ .^^^' ^o'" Coyote urine Treatment Figure 1. Daily nest survival (all eggs remaining in nest) of artificial duck nests treated with scents in Manitoba, 2002. Figure 3. Daily nest survival (all eggs remaining in nest) of natural duck nests treated with scents in Manitoba, 2002. Control o Coyote urine T Human hair — -V— - Worcestershire sauce • — 4 (Mothballs -^D-- 8 Mothballs. Exposure days Figure 2. Percent of surviving artificial duck nests (all eggs remaining in nest) treated with scents at X exposure day in Manitoba, 2002. • Control O Coyote urine a— 8 Mothballs v -^%o Exposure days Figure 4. Percent of surviving natural duck nests (all eggs remaining in nest) treated with scents at X exposure day in Manitoba, 2002. and Worcestershire sauce) or from their commercial claims (DEER-D-TER'^^^ and mothballs). Nests in the control group were each treated with L of marsh water, which was poured along the outside edge of the nest. A packet of DEER-D-TER^'^ was placed on the outside edge of each nest of the second group. DEER- D-TER^^ consisted of a green plastic packet contain- ing a mixture of sand and Coyote urine and was adver- tised to repel deer (Odocoileus spp.) and skunks. According to the manufacturer, this product was effec- tive in the field for ca. 90 days. Group three received one cup of human hair which was collected from three different salons and was combined to create a homoge- neous mixture. Group four received L of Worces- tershire sauce applied evenly to each egg and was re- applied on every subsequent visit. The fifth group received four mothballs double wrapped in cheesecloth to prevent accidental ingestion by ducks or predators. The sixth group received eight mothballs, to determine if a greater amount yielded a
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