Bird use of Conservation Reserve Program fields enrolled in the CP1 (cool-season grasses and legumes) and CP2 (warm-season native grasses) options in south-east Nebraska, USA

  • Published source details Delisle J.M. & Savidge J.A. (1997) Avian use and vegetation characteristics of Conservation Reserve Program fields. The Journal of Wildlife Management, 61, 318-325


This study is summarised as evidence for the following.

Action Category

Restore or create grasslands

Action Link
Bird Conservation
  1. Restore or create grasslands

    A replicated study from May 1991 to March 1995 in an agricultural landscape in Nebraska, USA (Delisle & Savidge 1997), found that species richness and abundance did not differ between five fields planted with cool-season, non-native, grasses and legumes and five planted with warm-season native grasses (all planted between 1987-1988; all between 20-40 ha). Dickcissels and grasshopper sparrows were the most abundant species during the breeding season (49-78% of total bird abundance). Common yellowthroats Geothlypis trichas and sedge wrens were more abundant on warm-season fields. American tree sparrows Spizella arborea were the most abundant native species during winter and were more abundant on warm-season fields. Bobolinks were significantly more abundant on cool-season fields, as were meadowlarks Sturnella spp. during winter.


Output references

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, terrestrial 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

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

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