Habitat use by Least Bitterns in the Arkansas Delta

Arkansas Game and Fish Commission
By:  and 



Least Bittern (Ixobrychus exilis) occupancy surveys were conducted in the Arkansas Delta, USA, during April-July 2005-2006 to determine the proportion of area occupied and relate occupancy to habitat characteristics. Previous large-scale surveys indicated few Least Bitterns were present in the Delta. During surveys at 190 sites, Least Bitterns were detected at 15 sites in 2005 and at 16 sites in 2006. Several candidate models were tested to explain occupancy based on habitat variables. Emergent vegetation cover was positively related to occupancy while the proportion of forest within 400 m of a survey site was negatively related to occupancy. The study suggests that managing the breeding habitat of Least Bitterns for emergent vegetation cover and controlling forest cover near occupied sites may contribute to this species' recovery throughout its range.

Publication type Article
Publication Subtype Journal Article
Title Habitat use by Least Bitterns in the Arkansas Delta
Series title Waterbirds
DOI 10.1675/063.033.0202
Volume 33
Issue 2
Year Published 2010
Language English
Publisher Waterbird Society
Publisher location Washington, D.C.
Contributing office(s) Coop Res Unit Atlanta
Description 8 p.
First page 140
Last page 147
Online Only (Y/N) N
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details