Reproduction of least bitterns in a managed wetland


This study is summarised as evidence for the following.

Action Category

Restore or create inland wetlands

Action Link
Bird Conservation
  1. Restore or create inland wetlands

    A replicated study from April-June in 1985-1991 in a 13 ha wetland site in South Carolina, USA (Post 1998), found that least bitterns Ixobrychus exilis nested at high densities (12 pairs/ha), had a 50% hatching rate and 55% of nests produced fledglings. The author points out that this rate is only slightly lower than that reported for natural wetlands. An average of 2.7 fledglings/nest were produced from an average 3.8 eggs/clutch. Most egg mortality was caused by nest instability.


Output references
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