Capturing Adult American Bitterns

Huschle, Gary; Toepfer, John E.; Brininger, Wayne L.; Azure, David A.

doi:10.1675/1524-4695(2002)025[0505:caab]2.0.co;2

Cited by 10 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We captured waterbirds using a combination of drop nets (Doherty 2009), whoosh-nets (Shirkey et al 2017), and hand-held net gun (Huschle et al 2002). Upon capture, we banded birds with an aluminum United States Geological Survey Bird Banding Lab band with a unique numerical identifier.…”

Section: Field Methodologymentioning

confidence: 99%

Hawaiian waterbird movement across a developed landscape

Paxton

Kawasaki

et al. 2022

J Wildl Manag

View full text Add to dashboard Cite

A key component for biologists managing mobile species is understanding where and when a species occurs at different locations and scaling management to fit the spatial and temporal patterns of movement. We established an automated radio‐telemetry tracking network to document multi‐year movement in 2016–2018 of 3 endangered waterbirds among wetlands on Oʻahu, Hawaiʻi, USA: ʻalae ʻula or Hawaiian gallinule (gallinule; Gallinula galeata sandvicensis), ʻalae keʻokeʻo or Hawaiian coot (coot; Fulica alai), and aeʻo or Hawaiian stilt (stilt; Himantopus mexicanus knudseni), each with different ecological requirements. There were marked differences in the movement propensity of the species, with no movement among sites detected in gallinules, 31% of coots moving among wetlands, and very high levels of daily movement in stilts. A network analysis revealed strong evidence for fidelity among individual stilts to specific wetlands, indicating different groups of wetlands supported different birds. There was also strong evidence for patterns in daily and seasonal movement patterns of stilts. Our work indicates the importance of each wetland to the waterbirds they support, as each individual had strong fidelity to a single wetland. In addition, for Hawaiian coots and stilts, which were documented moving among multiple wetlands, a network of wetlands may be key for long‐term persistence of these endangered species, and coordinated regional management of waterbirds as a shared resource could provide greater benefits to waterbirds than independent management of each wetland.

show abstract

Section: Field Methodologymentioning

confidence: 99%

Hawaiian waterbird movement across a developed landscape

Paxton

Kawasaki

et al. 2022

J Wildl Manag

View full text Add to dashboard Cite

show abstract

“…2005), simply flushing males towards nets (Belarus), landing net after luring a male with playback or after approaching it while spontaneously booming (Italy: Puglisi et al . 2001), and using a mirror trap within the booming range of a male (France, following Huschle et al . (2002) for the American Bittern B. lentiginosus) .…”

Section: Methodsmentioning

confidence: 99%

Geographical variation, sex and age in Great Bittern Botaurus stellaris using coloration and morphometrics

Dmitrenok¹,

Puglisi²,

Demongin³

et al. 2006

Ibis

View full text Add to dashboard Cite

Biometrics, plumage and bare‐part colour of 87 Great Bitterns Botaurus stellaris from 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: bill length, tarsus, wing length and body weight. We found little (though significant) geographical variation across Europe, but this was not clinal and we cannot exclude variation in measurement technique among observers. Males were significantly larger than females for all biometric parameters: a discriminant function based on these parameters was able to sex correctly all individuals. Body weight varied with season, especially for males. During the breeding period, lore colour was also a reliable sex‐criterion. Ageing proved more difficult and required a combination of iris colour (which darkens with age) and flight‐feather moult. From this, the largest sample size of known‐age Great Bitterns, we conclude that most previously published criteria for age determination of this species were wrong.

show abstract

“…Adult males were captured using walk-in traps in their territories (Huschle et al 2002). The females were captured on their nests with walk-in traps or handheld nets during late incubation (see van der Winden et al 2019).…”

Section: Catching and Tagging The Bitternsmentioning

confidence: 99%

The influence of weather on the migration behaviour of Eurasian Bitterns Botaurus stellaris

Winden

Hogeweg²,

Baaij

et al. 2021

Bird Study

View full text Add to dashboard Cite

Capsule: Migration studies of tagged Eurasian Bitterns Botaurus stellaris provide information on the behaviour of this secretive species in relation to weather conditions. Aims: To study if cold spells trigger southward migration in resident Eurasian Bitterns. To describe migratory behaviour including flight routes, altitudes, flight direction in relation to wind speed and direction, and general characteristics of stopping sites. Methods: Six adult Eurasian Bitterns from Dutch breeding areas were followed for two to five years using ARGOS-PTT/GPS transmitters or GPS trackers. Results: Four individuals remained at the breeding sites in winter and did not migrate in response to cold spells. Two individuals covered distances of 300 and 1600 km between stopping sites. They migrated predominantly at night, but over the Sahara they extended flights into daylight hours. Depending on wind assistance, flight speeds (groundspeed) varied between 3.6 and 26 ms −1 . Flight altitude varied from just above sea level when facing headwinds, to almost 2000 m above sea level under tail wind conditions. Repeatedly tracked individuals showed substantial variation in routes and stopping sites between successive migrations. These flight patterns appeared influenced by the speed and direction of the winds encountered en route. Conclusions: Eurasian Bitterns were either migratory or resident and the latter individuals did not perform facultative movements at the onset of cold spells. The flight speed, flight altitudes, and routes of migrating birds were influenced by wind conditions. This likely explains the variable use of stopping sites between years.

show abstract

Capturing Adult American Bitterns

Cited by 10 publications

References 3 publications

Hawaiian waterbird movement across a developed landscape

Hawaiian waterbird movement across a developed landscape

Geographical variation, sex and age in Great Bittern Botaurus stellaris using coloration and morphometrics

The influence of weather on the migration behaviour of Eurasian Bitterns Botaurus stellaris

Contact Info

Product

Resources

About