Birds be safe: Can a novel cat collar reduce avian mortality by domestic cats (Felis catus)?

  • Published source details Willson S.K., Okunlola I.A. & Novak J.A. (2015) Birds be safe: Can a novel cat collar reduce avian mortality by domestic cats (Felis catus)?. Global Ecology and Conservation, 3, 359-366.


This study is summarised as evidence for the following.

Action Category

Use collar-mounted devices to reduce predation by domestic animals

Action Link
Terrestrial Mammal Conservation
  1. Use collar-mounted devices to reduce predation by domestic animals

    A replicated, randomized, controlled study in 2013–2014 in a residential area of New York state, USA (Willson et al. 2015) found that domestic cats Felis catus wearing collars with bright colours and patterns brought home fewer mammals than did cats with no collars in autumn, but not in spring. From September–November 2013, 54 cats brought home fewer mammals (0.6/cat) in six weeks spent wearing a Birdsbesafe® collar with bright colours and patterns than the same cats did during six weeks without a collar (1.2/cat). However in a repeat experiment from April–June 2014 there was no difference (with collar: 1.1/cat; without collar: 1.1/cat). Cats were randomly allocated to one of two groups, beginning with or without a Birdsbesafe® collar, and the treatment on each cat was changed every two weeks throughout a 12-week period. Only cats that regularly brought home intact prey were included in the study. Owners collected dead prey items and recorded live prey before release.

    (Summarised by: Ricardo Rocha )

Output references
What Works 2021 cover

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read the latest volume: Volume 21

Go to the CE Journal

Discover more on our blog

Our blog contains the latest news and updates from the Conservation Evidence team, the Conservation Evidence Journal, and our global partners in evidence-based conservation.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape ProgrammeRed List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Mauritian Wildlife Supporting Conservation Leaders
Sustainability Dashboard National Biodiversity Network Frog Life The international journey of Conservation - Oryx Cool Farm Alliance UNEP AWFA Bat Conservation InternationalPeople trust for endangered species Vincet Wildlife Trust