Study

Response of nesting ducks to predator exclosures and water conditions during drought

  • Published source details Cowardin L.M., Pietz P.J., Lokemoen J.T., Sklebar H.T. & Sargeant G.A. (1998) Response of nesting ducks to predator exclosures and water conditions during drought. The Journal of Wildlife Management, 62, 152-163.

Actions

This study is summarised as evidence for the following.

Action Category

Protect bird nests using electric fencing

Action Link
Bird Conservation
  1. Protect bird nests using electric fencing

    A replicated, controlled trial from 1987-1991 in three wetland-grassland sites in North Dakota and Minnesota, USA (Cowardin et al. 1998) found that using fencing (1.8 m tall with an electrified top wire and with ground-level openings to allow broods to leave) to exclude mammalian predators from 25 ha of nesting habitat significantly increased the nesting success of dabbling ducks Anas spp. (75% of 452 nests inside exclosures), compared to those nesting outside exclosures (no data provided for control). The proportion of nests inside exclosures compared with control areas increased signifcantly for mallard A. platyrhynchos, gadwall A. strepera, blue-winged teal A. discors and northern pintail A. acuta, but not for northern shoveler A. clypeata and dabbling ducks. The authors note that there was a local and regional decline in dabbling duck numbers over the study period, probably due to an ongoing drought.

     

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 18

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 Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust