Migration and Wintering Areas of American Bitterns (<i>Botaurus lentiginosus</i>) that Summer in Central North America as Determined by Satellite and Radio Telemetry, 1998–2003

Huschle, Gary; Toepfer, John E.; Douglas, David C.

doi:10.1675/063.036.0307

Cited by 11 publications

(10 citation statements)

References 7 publications

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“…These birds migrated according to a strategy that is significantly different to that of Purple Herons, which migrate fast, without stopovers en route (Jourdain et al 2008;Van der Winden et al 2010). Data obtained from the satellite tracking of American Bitterns, though not as detailed, indicate that these birds migrate more slowly than Purple Herons but faster than Night Herons ( Van der Winden et al 2010;Huschle et al 2013). More data are needed to be sure that the patterns of autumn migration we found in this study are general and hold for birds breeding across Europe.…”

Section: Discussionmentioning

confidence: 65%

“…The measured velocity of Night Herons (55 km/h) during migration was slightly higher than that of Purple Herons (46 km/h; Van der Winden et al 2010), but similar to that of American Bitterns (52 km/h; Huschle et al 2013).…”

Section: Discussionmentioning

confidence: 69%

“…Night Herons, like Purple Herons and American Bitterns ( Van der Winden et al 2010;Huschle et al 2013), migrate mostly at night, and spend short diurnal stops resting. The types of habitat in which Night Herons made their short diurnal stops indicate that these birds did not feed there.…”

Section: Discussionmentioning

confidence: 99%

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Post-breeding migration of Night Herons Nycticorax nycticorax tracked by GPS/GSM transmitters

Ledwoń

Betleja²

2015

J Ornithol

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The migratory strategy of herons is poorly understood: only that of Purple Heron has been well studied. The migratory movements of three Night Herons from the Upper Vistula Valley (Poland) were studied using a GPS/GSM-tracking system in 2012. The results document a previously unknown autumn migration strategy of Night Herons with long stopovers en route, unlike that of Purple Herons. The different migration strategies of Purple Herons and Night Herons could be due to differences in wing-loadings and foraging ecology.

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Section: Discussionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 69%

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Post-breeding migration of Night Herons Nycticorax nycticorax tracked by GPS/GSM transmitters

Ledwoń

Betleja²

2015

J Ornithol

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“…Black‐crowned Night‐Herons tracked or resighted at the breeding colony for multiple years showed strong annual fidelity to both breeding and wintering areas. High site fidelity has also been documented for other wading birds during both the breeding and winter seasons (Huschle et al 2013, Koczur et al 2018, Mashiko and Toquenaga 2018). In Japan, 64% of heron and egret breeding colonies have been used for the past 50 years, even though other sites were available (Mashiko and Toquenaga 2018), possibly because of fidelity to both foraging and roosting/colony sites (Yamada 1994, Koczur et al 2018).…”

Section: Discussionmentioning

confidence: 83%

Full annual cycle tracking of Black‐crowned Night‐Herons suggests wintering areas do not explain differences in colony population trends

et al. 2021

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An understanding of the full annual cycle distributions of bird populations is a prerequisite to elucidating the drivers of differing trends among breeding populations. In the United States, Black‐crowned Night‐Herons (Nycticorax nycticorax) are listed as threatened or endangered in some states where they breed, but populations are stable in others. Outside of the breeding season, little is known about the species, including migratory routes and wintering areas. We used transmitters to track 28 Black‐crowned Night‐Herons from breeding colonies with stable (Washington, D.C.) and declining (Ohio) populations. For breeding populations across North America, we used band encounter data to estimate the movement of populations between breeding and wintering latitudes and the strength of migratory connectivity metric among latitudes. The first full annual cycle tracking of Black‐crowned Night‐Herons revealed diverse wintering strategies, including broad geographic distributions, within‐winter movements, and between‐year site fidelity. We found that over 80% of tracked individuals from the two breeding populations shared similar wintering areas, including the southern United States, Cuba, Honduras, and Nicaragua. Black‐crowned Night‐Herons exhibited weak breeding to wintering migratory connectivity (MC = 0.001 ± 0.03) across the latitudinal extent of their North American breeding range, including some degree of partial migration. High overlap in the winter distributions and within‐winter relocations of Black‐crowned Night‐Herons tracked from breeding populations in the two regions, as well as weak migratory connectivity across their range, suggest that localized conditions during the winter period may not be driving different trends in breeding populations.

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“…The northernmost populations of Eurasian Bittern are described to be completely migratory (Voisin 1991), a pattern that is also found in American Bitterns B. lentiginosus (Huschle et al 2013). In contrast, Eurasian Bitterns from areas with warmer winters such as the UK and the Mediterranean regions are suggested to be entirely resident (Voisin 1991, White et al 2006.…”

Section: Sex-related Migration Distances In the Dimorphic Eurasianmentioning

confidence: 99%

Sex-Related Migration Distances in the Dimorphic Eurasian Bittern Botaurus stellaris Breeding in the Netherlands

Winden¹,

Hogeweg²,

Shamoun‐Baranes

et al. 2020

Ardea

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In many bird species intraspecific variation in migration strategies is related to sex or size. The Eurasian Bittern Botaurus stellaris is a sexually size-dimorphic heron species with a vast breeding and wintering range spanning a range of climates. Ringing data show that Bitterns from northern populations migrate westwards or southwards over thousands of kilometres, while Bitterns from southern or temperate breeding areas migrate much shorter distances or remain resident. So far, any differences in the migrations of males and females have remained unstudied. In temperate climates, relatively benign winters alternate with the occasional harsh winter, and under these conditions, males as the larger sex might take the risk to stay rather than show seasonal migration. In the years 2010-2012 we equipped three females and three males from breeding areas in The Netherlands with a tracking device, recording their movements over periods of 2-5 years. All three males and one female stayed within or near the breeding area during the non-breeding season, but two females moved to distant wintering sites. One female migrated 4900 km to The Gambia providing the first direct evidence for trans-Saharan migration in this species. Another female migrated 700 km to winter in Devon, UK, for five consecutive years. The Bitterns were site-faithful to their breeding area and, mostly, to their wintering areas as well, although one male and one female progressively wintered closer to the breeding area in three successive years. Our results suggest that larger males from The Netherlands, a breeding area with fluctuating winter conditions, are predominantly resident, while the females are partial migrants with individually different and flexible strategies.

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Migration and Wintering Areas of American Bitterns (Botaurus lentiginosus) that Summer in Central North America as Determined by Satellite and Radio Telemetry, 1998–2003

Cited by 11 publications

References 7 publications

Post-breeding migration of Night Herons Nycticorax nycticorax tracked by GPS/GSM transmitters

Post-breeding migration of Night Herons Nycticorax nycticorax tracked by GPS/GSM transmitters

Full annual cycle tracking of Black‐crowned Night‐Herons suggests wintering areas do not explain differences in colony population trends

Sex-Related Migration Distances in the Dimorphic Eurasian Bittern Botaurus stellaris Breeding in the Netherlands

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