Experimentally manipulating the landscape of fear to manage problem animals

Alex Atkins (Corresponding Author), Stephen M Redpath, Rob M Little, Arjun Amar

Research output: Contribution to journalArticle

7 Citations (Scopus)
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Abstract

Negative interactions between humans and wildlife are increasing, often leading to conflict between different stakeholders over appropriate management interventions. We experimentally tested whether introducing trained Harris's hawks (Parabuteo unicinctus) through falconry could be an effective management tool to reduce nuisance Egyptian geese (Alopochen aegyptiaca). We hypothesized that falconry would result in elevated fear responses of geese, resulting in increased vigilance, reduced favorability of the site, and locally reduced abundance. We conducted our study on 3 golf courses (1 treatment and 2 controls) in the Western Cape, South Africa, where Egyptian geese are a pest species. Our treatment involved flying the Harris's hawk directly at geese from golf carts. We monitored vigilance and goose numbers before, during, and after treatment. Goose vigilance at the treatment site increased by 76% and abundance declined by 73% following falconry. We did not observe changes at either control site. Although the hawks killed some geese, the decreases in abundance were almost 3 times greater than the numbers killed, indicating that indirect effects were considerably larger than the direct effect of mortality. During the treatment period, vigilance rates were greater in the presence of a golf cart, suggesting that geese learned to associate carts with the threat of predation. Post-treatment vigilance rates were significantly less than rates detected during the treatment period and goose abundance on the experimental site increased rapidly post-treatment, returning to pre-treatment rates within 2 months. Our results demonstrate the efficacy of falconry to reduce nuisance bird abundance and suggest there may be other applications where the deployment of trained predators can be used to mitigate negative human-wildlife interactions. © 2017 The Wildlife Society.
Original languageEnglish
Pages (from-to)610-616
Number of pages7
JournalJournal of Wildlife Management
Volume81
Issue number4
Early online date13 Feb 2017
DOIs
Publication statusPublished - May 2017

Fingerprint

vigilance
geese
fearfulness
animal
carts
animals
golf course
pest species
wildlife
stakeholder
human-wildlife relations
predation
predator
bird
golf courses
hawks
mortality
rate
stakeholders
South Africa

Keywords

  • Alopochen aegyptiaca
  • Cape Town
  • Egyptian goose
  • falconry
  • landscape of fear
  • nuisance species
  • predator-prey dynamics
  • predation risk

Cite this

Experimentally manipulating the landscape of fear to manage problem animals. / Atkins, Alex (Corresponding Author); Redpath, Stephen M; Little, Rob M; Amar, Arjun.

In: Journal of Wildlife Management, Vol. 81, No. 4, 05.2017, p. 610-616.

Research output: Contribution to journalArticle

Atkins, Alex ; Redpath, Stephen M ; Little, Rob M ; Amar, Arjun. / Experimentally manipulating the landscape of fear to manage problem animals. In: Journal of Wildlife Management. 2017 ; Vol. 81, No. 4. pp. 610-616.
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