American Bittern (Botaurus lentiginosus) Science Article 2 abstract An effective and efficient bird monitoring program is challenging to develop, given the different level of intensity of monitoring and the statistical vigor that monitoring programs must meet to effectively address specific objectives. I evaluated the marsh bird monitoring program established at Agassiz National Wildlife Refuge (AGNWR) […]
Category: Ciconiiformes
Geographical variation, sex and age in Great Bittern Botaurus stellaris using coloration and morphometrics
American Bittern (Botaurus lentiginosus) Science Article 1 abstract Biometrics, plumage and bare-part colour of 87 Great BitternsBotaurus stellarisfrom the UK,France, Italy, Poland and Belarus, of known sex (sexed by behaviour, DNA or dissection),were analysed to provide reliable sexing and ageing criteria for this little-known species,and to investigate geographical variation in biometrics. Four parameters were analysed: […]
Upland Nesting of American Bitterns, Marsh Hawks, and Short-Eared Owls
American Bittern (Botaurus lentiginosus) Science Article 4 abstract Nests of American bitterns lentiginosus) marsh hawks (Circus cyaneus), and short-eared owls (Asio u ually found in wetland habitats. Although large marshes containing dense stands of bulrushes (Scirpus), (Typha) , or other wetland vegetation are favored nesting cover , these birds have also been reported to nest […]
Copulatory Behavior of the American Bittern
American Bittern (Botaurus lentiginosus) Science Article 3 abstract There appears to be almost no detailed information on the behavior associated with copulation in the American Bittern (Botaurus lentiginosus); Palmer (Ed., 1962, Handbook of North American birds, vol. 1, New Haven, Yale Univ. Press) has summarized the fragmentary notes on this species. The comparable behavior of […]
Notes on the Breeding of Chestnut-Bellied Herons (Agamia Agami) in Costa Rica
Agami Heron (Agamia agami) Science Article 2 abstract During a survey of the breeding birds of Costa Rica conducted by the Western Foundation of Vertebrate, I found a nesting colony of the Chestnut-bellied Heron (Agamia agami) at Westfalia, 7 km SE of Puerto Limon, Prov. Limon, on 19 August 1985. This is the first breeding […]
Notes on the Breeding of the Chestnut-bellied Heron (Agamia Agami) in Venezuela
Agami Heron (Agamia agami) Science Article 1 abstract Although some information on the breeding of the Chestnut-bellied Heron (Agamia agami) in other countries has been published (Michener et al. 1964, Haverschmidt 1968, J. Hancock and H. Elliot 1978), no previous breeding records have been reported for Venezuela. On 26 July 1980, we located three nests […]
Sacred Ibis: a new invasive species in Europe
African Sacred Ibis (Threskiornis aethiopicus) Science Article 1 abstract Sacred Ibis Threskiornis aethiopicus is closelyrelated to both Black-headed Ibis T. melanocephalus(from the Indian subcontinent) andAustralian White Ibis T. molucca (which breedsin Australia, New Guinea and some nearbyislands)-to the point that they are sometimestreated as one species, T. aethiopicus. However,they are generally regarded as three distinctspecies […]
White Stork (Ciconia ciconia)
[order] CICONIIFORMES | [family] Ciconiidae | [latin] Ciconia ciconia | [authority] Linnaeus, 1758 | [UK] White Stork | [FR] Cigogne blanche | [DE] Weissstorch | [ES] Ciguena Blanca | [NL] Ooievaar Subspecies Monotypic species Genus Storks are rather well represented in the world fossil record, although no comprehensive review of them has been attempted. The […]
Zigzag Heron (Zebrilus undulatus)
[order] CICONIIFORMES | [family] Ardeidae | [latin] Zebrilus undulatus | [authority] Gmelin, 1789 | [UK] Zigzag Heron | [FR] Onore zigzag | [DE] Zickzackreiher | [ES] Avetigre Enana | [NL] Zigzagreiger Subspecies Monotypic species Genus Zebrilus is a monotypic genus in the family Ardeidae. It consists of one species the Zigzag Heron. Even though the […]
Yellow Bittern (Ixobrychus sinensis)
[order] CICONIIFORMES | [family] Ardeidae | [latin] Ixobrychus sinensis | [authority] Gmelin, 1789 | [UK] Yellow Bittern | [FR] Blongios de Chine | [DE] Chinadommel | [ES] Avetorillo chino | [NL] Chinees Woudaapje Subspecies Genus Species subspecies Region Range Ixobrychus sinensis OR widespread, also e Asia Genus Ixobrychus is a genus of bitterns, a group […]