Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes
ABSTRACT Coyotes (Canis latrans) are the top predator of livestock in the contiguous United States. Developing more effective nonlethal tools to prevent coyote depredation will facilitate coexistence between livestock producers and coyotes. Fladry is a nonlethal deterrent designed to defend livestoc...
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Wiley
2019-06-01
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| Series: | Wildlife Society Bulletin |
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| Online Access: | https://doi.org/10.1002/wsb.970 |
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| author | Julie K. Young John Draper Stewart Breck |
| author_facet | Julie K. Young John Draper Stewart Breck |
| author_sort | Julie K. Young |
| collection | DOAJ |
| description | ABSTRACT Coyotes (Canis latrans) are the top predator of livestock in the contiguous United States. Developing more effective nonlethal tools to prevent coyote depredation will facilitate coexistence between livestock producers and coyotes. Fladry is a nonlethal deterrent designed to defend livestock by creating a visual barrier to wolves (C. lupus). Fladry may also be effective with coyotes, but large gap spacing between flags may reduce its efficacy. To address this issue, we performed 2 experiments on captive coyotes using fladry modified to reduce gap spacing at the U.S. Department of Agriculture, Predator Research Facility in Millville, Utah, USA, during 2015–2016 and 2017–2018. In 2015–2016, we tested 2 styles for attaching flags (top‐knot and shower‐curtain) to the rope‐line that reduce gaps by preventing coiling of individual flags. In 2017–2018, we tested the efficacy of gap spacing (27.9 cm vs. 45.7 cm) between flags for preventing coyote crossings. For both tests, we compared the time until coyotes crossed the fladry between treatment types. We found no differences in time to crossing between the 2 attachment designs. In our second experiment, fladry with smaller gaps between flags had greater efficacy of preventing coyote crossings than did fladry with larger gaps. Our results also indicated that for each additional minute coyotes spent interacting with fladry overall (i.e., increased persistent behavior), survival of the barrier decreased. These results suggest that persistent coyotes may overcome neophobia more rapidly than coyotes that do not exhibit persistent behaviors. Furthermore, use of top‐knot fladry and coyote‐width spacing will increase protection of livestock from coyotes. © 2019 The Wildlife Society. |
| format | Article |
| id | doaj-art-8afedc3eb98d48809fe5a009a7ac0b1a |
| institution | DOAJ |
| issn | 2328-5540 |
| language | English |
| publishDate | 2019-06-01 |
| publisher | Wiley |
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| series | Wildlife Society Bulletin |
| spelling | doaj-art-8afedc3eb98d48809fe5a009a7ac0b1a2025-08-20T02:49:15ZengWileyWildlife Society Bulletin2328-55402019-06-0143226527110.1002/wsb.970Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotesJulie K. Young0John Draper1Stewart Breck2U.S. Department of Agriculture National Wildlife Research Center, Predator Research Facility Millville UT 84326 USAEcology Center Utah State University Logan UT 84322 USAU.S. Department of Agriculture National Wildlife Research Center, Predator Research Facility Fort Collins CO 80521 USAABSTRACT Coyotes (Canis latrans) are the top predator of livestock in the contiguous United States. Developing more effective nonlethal tools to prevent coyote depredation will facilitate coexistence between livestock producers and coyotes. Fladry is a nonlethal deterrent designed to defend livestock by creating a visual barrier to wolves (C. lupus). Fladry may also be effective with coyotes, but large gap spacing between flags may reduce its efficacy. To address this issue, we performed 2 experiments on captive coyotes using fladry modified to reduce gap spacing at the U.S. Department of Agriculture, Predator Research Facility in Millville, Utah, USA, during 2015–2016 and 2017–2018. In 2015–2016, we tested 2 styles for attaching flags (top‐knot and shower‐curtain) to the rope‐line that reduce gaps by preventing coiling of individual flags. In 2017–2018, we tested the efficacy of gap spacing (27.9 cm vs. 45.7 cm) between flags for preventing coyote crossings. For both tests, we compared the time until coyotes crossed the fladry between treatment types. We found no differences in time to crossing between the 2 attachment designs. In our second experiment, fladry with smaller gaps between flags had greater efficacy of preventing coyote crossings than did fladry with larger gaps. Our results also indicated that for each additional minute coyotes spent interacting with fladry overall (i.e., increased persistent behavior), survival of the barrier decreased. These results suggest that persistent coyotes may overcome neophobia more rapidly than coyotes that do not exhibit persistent behaviors. Furthermore, use of top‐knot fladry and coyote‐width spacing will increase protection of livestock from coyotes. © 2019 The Wildlife Society.https://doi.org/10.1002/wsb.970Canis latranscarnivoreconservationcoyotelivestock depredationnonlethal control |
| spellingShingle | Julie K. Young John Draper Stewart Breck Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes Wildlife Society Bulletin Canis latrans carnivore conservation coyote livestock depredation nonlethal control |
| title | Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes |
| title_full | Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes |
| title_fullStr | Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes |
| title_full_unstemmed | Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes |
| title_short | Mind the gap: Experimental tests to improve efficacy of fladry for nonlethal management of coyotes |
| title_sort | mind the gap experimental tests to improve efficacy of fladry for nonlethal management of coyotes |
| topic | Canis latrans carnivore conservation coyote livestock depredation nonlethal control |
| url | https://doi.org/10.1002/wsb.970 |
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