Least Bittern (Ixobrychus exilis)

2009 ◽  
Author(s):  
Alan F. Poole ◽  
Peter E. Lowther ◽  
James P. Gibbs ◽  
F. A. Reid ◽  
Scott M. Melvin
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern

Least Bittern (Ixobrychus exilis) Survey Protocol

Waterbirds ◽  
2011 ◽  
Vol 34 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Benoît Jobin ◽  
Ron Bazin ◽  
Laurie Maynard ◽  
Angela McConnell ◽  
Jennifer Stewart
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern ◽  
Survey Protocol

Least Bittern (Ixobrychus exilis)

2009 ◽  
Author(s):  
Alan F. Poole ◽  
Peter E. Lowther ◽  
James P. Gibbs ◽  
F. A. Reid ◽  
Scott M. Melvin
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern

Least Bittern (Ixobrychus exilis)

2020 ◽  
Author(s):  
Alan F. Poole ◽  
Peter E. Lowther ◽  
James P. Gibbs ◽  
F. A. Reid ◽  
Scott M. Melvin
Keyword(s):  
Ixobrychus Exilis ◽  
Least Bittern

scholarly journals Cory’s Bittern, Ixobrychus “neoxenus” exilis: morph, mutant, or mixed bag?

2015 ◽  
Vol 128 (4) ◽  
pp. 350
Author(s):  
Paul Smith
Keyword(s):  
Colour Morph ◽  
Review Of The Literature ◽  
Dark Colour ◽  
Ixobrychus Exilis ◽  
Least Bittern ◽  
Temporal And Spatial

Cory’s Bittern (Ixobrychus “neoxenus” exilis) is an enigmatic form, usually referred to as a rare dark colour phase or morph of Least Bittern (Ixobrychus exilis [Gmelin, 1789]). A review of the literature indicates that birds identified as Cory’s Bittern show considerable plumage variation and commonly exhibit multiple plumage anomalies. Temporal and spatial clumping of records shows that they are of irregular occurrence; thus, they do not meet the criteria for recognition as a colour morph. Cory’s Bittern should thus be viewed as a colloquial name that refers to any one of a number of abnormally dark-plumaged, genetically undefined and phenotypically heterogeneous Least Bitterns.

Response of a Least Bittern(Ixobrychus exilis)Population to Interannual Water Level Fluctuations

Waterbirds ◽  
2009 ◽  
Vol 32 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Benoît Jobin ◽  
Luc Robillard ◽  
Claudie Latendresse
Keyword(s):  
Water Level ◽  
Water Level Fluctuations ◽  
Ixobrychus Exilis ◽  
Least Bittern

Small unmanned aircraft: precise and convenient new tools for surveying wetlands

2013 ◽  
Vol 01 (01) ◽  
pp. 15-24 ◽  
Author(s):  
Dominique Chabot ◽  
David M. Bird
Keyword(s):  
Land Cover ◽  
Ground Level ◽  
Unmanned Aircraft ◽  
Unmanned Aircraft Systems ◽  
Spectral Image ◽  
Ixobrychus Exilis ◽  
Least Bittern ◽  
Manual Classification ◽  
Water Vegetation

Unmanned aircraft systems (UAS) could be of benefit for surveying wetlands, which often have spatially complex habitats that are challenging to navigate and assess at ground level. We used a small UAS to acquire aerial imagery and characterize land cover in a 128 ha wetland impoundment as part of a conservation study of the least bittern (Ixobrychus exilis). The method was successful in gathering sub-decimetre georeferenced imagery that clearly revealed the fine-scale water–vegetation interface and in which several types of vegetation could be distinguished and classified using spectral image analysis software. Simplified three-category land cover classifications obtained in this manner showed strong agreement with manual classification of random points in the imagery, as evidenced by a kappa coefficient of 87.19% (n = 600). Compared to cover estimates made during concurrent ground-based surveys in 30 sampling plots, UAS data yielded overall similar water–vegetation ratios, but proved more effectual for detecting small amounts of highly interspersed water. Significant differences (p = 0.004) in cover estimates of the dominant vegetation, cattail, were likely primarily due to limitations of ground-based surveys. Given the effective and convenient application of a UAS in this study, we recommend their further use in wetland-related research and management.

Habitat Use by Least Bitterns (Ixobrychus exilis) in Québec

Waterbirds ◽  
2011 ◽  
Vol 34 (2) ◽  
pp. 143-150 ◽  
Author(s):  
Benoît Jobin ◽  
Pierre Fradette ◽  
Sandra Labrecque
Keyword(s):  
Habitat Use ◽  
Ixobrychus Exilis

Wetland-Scale Habitat Determinants Influencing Least Bittern Use of Created Wetlands

Waterbirds ◽  
2009 ◽  
Vol 32 (1) ◽  
pp. 16-24 ◽  
Author(s):  
Slade Moore ◽  
Jack R. Nawrot ◽  
John P. Severson
Keyword(s):  
Created Wetlands ◽  
Least Bittern

Cardiofilaria pavlovskyi Strom, 1937 and Avioserpens sp. (Nematoda) from Canadian ciconiiform birds

1973 ◽  
Vol 51 (8) ◽  
pp. 847-851 ◽  
Author(s):  
George G. Gibson
Keyword(s):  
New Brunswick ◽  
Nominal Species ◽  
Immature Female ◽  
New Host ◽  
Ardea Herodias ◽  
The Status ◽  
Ixobrychus Exilis ◽  
Botaurus Lentiginosus

Cardiofilaria ardae (Mawson, 1957) is considered to be a synonym of Cardiofilaria pavlovskyi Strom, 1937, specimens of which were found in Ardea herodias from New Brunswick and in a new host, Ixobrychus exilis, from Ontario. Male and immature female Avioserpens sp. are reported from Botaurus lentiginosus, Quebec, and immature females from I. exilis, Ontario. The males have six to seven caudal papillae per side and have spicules that resemble those of A. mosgovoyi Supryaga, 1965 but are nearly twice as long. The status of the seven nominal species of Avioserpens is discussed briefly.

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