Sandhill crane nesting success and productivity in relation to predator removal in southeastern Oregon

  • Published source details Littlefield C.D. (2003) Sandhill crane nesting success and productivity in relation to predator removal in southeastern Oregon. The Wilson Bulletin, 115, 263-269.


This study is summarised as evidence for the following.

Action Category

Control predators not on islands for cranes

Action Link
Bird Conservation
  1. Control predators not on islands for cranes

    A trial in southeast Oregon, USA, between 1966 and 1989 (Littlefield 2003), found that greater sandhill crane Grus canadensis tabida hatching success and fledging success were both higher in ten years when predators were controlled than in nine years without predator control (average hatching/fledging success of 55% and 9.1% for 662 clutches in predator control years vs. 42% and 5.1% for 434 in non-control years). Coyotes Canis latrans and ravens Corvus corax were controlled by poisoning and shooting. The main nest predators were coyotes (predating 17% of clutches in predator control years and 27% in non-control years), ravens (14% and 20%) and raccoons Procyon lotor (11% and 8%, the increase possibly related to a reduction in coyote numbers).


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