Familienbindung und Auswilderung des WaldrappsGeronticus eremita — ein Pilotversuch

Thaler, Ellen; Pegoraro, Karin; Stabinger, Susanne

doi:10.1007/bf01639910

Cited by 12 publications

(5 citation statements)

References 4 publications

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“…Several release trials followed, including those for juvenile birds (Birecik and Tel Aviv), juvenile and adult birds (Tel Aviv and Birecik), adult birds only (Tel Aviv) and larger groups of birds of different ages (Birecik and Tel Aviv). In total, more than 200 birds were released, most of which disappeared soon after release and none of the projects managed to establish a self-sustaining colony (Thaler et al, 1992).…”

Section: International Conservation Effortsmentioning

confidence: 99%

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Back into the wild: establishing a migratory Northern bald ibis Geronticus eremita population in Europe

Fritz

Kramer²,

Hoffmann³

et al. 2017

International Zoo Yearbook

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From the perspective of zoological institutions reintroduction projects offer many possibilities to link conservation and research programmes. An example of the multi‐layered and diverse contributions that zoological institutions in general and, specifically, Vienna Zoo, Austria, can make is the reintroduction of the Northern bald ibis Geronticus eremita in central Europe. The involvement of zoological institutions ranges from the provision of eggs or birds for release trials, to financial and advocacy support, including with government agencies and non‐governmental organizations. Through involvement at a steering level at the coordinative association ‘Förderverein Waldrappteam’ and as a partner in the EU LIFE+ reintroduction project, Vienna Zoo directly contributes to the shape of the reintroduction project for this Critically Endangered species, and provides much more than technical and infrastructural support. The reintroduction of the Northern bald ibis is broadly in line with the reintroduction guidelines of the International Union for Conservation of Nature. This project provides added benefits not only through its work to prevent the illegal hunting of migratory birds but also the production and dissemination of scientific research.

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Section: International Conservation Effortsmentioning

confidence: 99%

“…In 1991, Ellen Thaler at Alpenzoo Innsbruck initiated a pilot study with handreared chicks, significantly supported by the former director of Alpenzoo Innsbruck and Vienna Zoo, Helmut Pechlaner (Thaler et al, 1992). The main aim of the pilot study was to develop a suitable method for releasing the birds.…”

Section: Development Of European Release Programmesmentioning

confidence: 99%

Back into the wild: establishing a migratory Northern bald ibis Geronticus eremita population in Europe

Fritz

Kramer²,

Hoffmann³

et al. 2017

International Zoo Yearbook

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“…It may be speculated that unfavorable local conditions that lead to many single-chick nests [Aharoni, 1911[Aharoni, , 1929 produce less gregarious, potentially more dispersing flocks compared to conditions that allow many sibling broods to be raised. Therefore, with regard to establishing free-living colonies from zoo offspring, we recommend utilizing the social dispositions of these birds [Thaler et al, 1981] by carefully handraising hatchlings in near-natural socialization with siblings [Thaler et al, 1992;Tuckova et al, 1998;International Workshop, 1999;Kotrschal, 1999;Tuckova, 1999].…”

Section: Discussionmentioning

confidence: 99%

“…This situation demands careful management of the last wild birds, as well as the planning of reintroductions in suitable areas [International Workshop, 1999]. To increase the specific knowledge needed for these purposes, we began in 1997 to establish a semitame, free-flying colony of Waldrapp ibis from hand-raised zoo offspring in Gru¨nau, Austria [see Thaler et al, 1992]. After heavy losses during the first 2 years [Tuckova et al, 1998;Kotrschal, 1999], the number of temporarily free-flying birds is now at 22 [Tintner and Kotrschal, 2001].…”

Section: Introductionmentioning

confidence: 99%

Early social influence on nestling development in Waldrapp ibis (Geronticus eremita)

Tintner

Kotrschal

2002

Zoo Biology

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The Waldrapp ibis is critically endangered; hence specific knowledge is needed to support the management of the last birds in the wild, and to prepare for reintroduction projects. In this study we attempted to test the effects of raising an ibis as a single chick from hatching to the age of 3 weeks, as compared to raising it together with nestmates, on development and juvenile socialization. In times of food shortage, interference competition between nestlings may cause quick starvation of all but the largest chick. In the context of establishing a free-flying, semi-tame colony of Waldrapp ibis at the Konrad Lorenz Research Station in Gru¨nau, Austria, 12 zoo-bred hatchlings were experimentally hand-raised under ad libitum food conditions. Seven individuals were placed into three nests in visual and acoustical contact with each other to mimic a colony situation. Five others were raised in isolation their first 21 days after hatching and then were united with the sibling-raised individuals in a colony-like situation. After hatching, isolated chicks showed high frequencies of distress calls; they begged and ate less, put on less weight, and were less active than the socially-housed chicks, and fledged an average of 6 days later. As the groups did not significantly differ in excreted corticosterone metabolites, we assume that the lack of social stimulation, rather than stress, caused the observed effects in the single-raised chicks. After unification, individuals of both groups tended to stay apart from each other. Formerly single-housed birds mainly interacted dyadically among themselves, whereas the sibling-raised birds tended to have more varied contacts with colony members of different ages. The potential applications of these

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“…Pilot studies tried to establish methods for this purpose, e. g. in Israel (Mendelssohn 1994). Most recently a new method was developed in Innsbruck (Thaler et al 1992, Pegoraro & Thaler 1994), which has now been refined and elaborated in Grünau/Upper Austria and in Friuli/Italy.…”

Section: Introductionmentioning

confidence: 99%

First evidence of mtDNA sequence differences between Northern Bald Ibises (Geronticus eremita) of Moroccan and Turkish origin

Pegoraro¹,

Föger²,

Parson³

2001

J Ornithol

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Summary We examined two segments of the mitochondrial genome of Moroccan and Turkish Bald Ibises. One point mutation was consistently discovered in a 307 bp portion of the cytochrome b gene which was population specific. This is the first indication of a genetic differentiation between the two populations. The consequences of this finding for the conservation of the highly endangered bird are discussed. In future captive breeding and releasing programmes, only birds of known origin should be used.

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Familienbindung und Auswilderung des WaldrappsGeronticus eremita — ein Pilotversuch

Cited by 12 publications

References 4 publications

Back into the wild: establishing a migratory Northern bald ibis Geronticus eremita population in Europe

Back into the wild: establishing a migratory Northern bald ibis Geronticus eremita population in Europe

Early social influence on nestling development in Waldrapp ibis (Geronticus eremita)

First evidence of mtDNA sequence differences between Northern Bald Ibises (Geronticus eremita) of Moroccan and Turkish origin

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