Northern Bald Ibis (Geronticus eremita)

2020 ◽  
Author(s):  
Eloïsa Matheu ◽  
Josep del Hoyo ◽  
Guy M. Kirwan ◽  
Ernest Garcia
Keyword(s):  
Geronticus Eremita

scholarly journals Sightings of reintroduced northern bald ibis Geronticus eremita crossing between Spain and Morocco are probably hand-reared rather than wild-born

Oryx ◽  
2018 ◽  
Vol 52 (3) ◽  
pp. 411-412
Author(s):  
Christopher G. R. Bowden ◽  
Jorge Fernández Orueta ◽  
José Manuel López Vázquez ◽  
Alejandro Onrubia ◽  
Miguel Angel Quevedo
Keyword(s):  
Geronticus Eremita

The Northern Bald Ibis Geronticus eremita in Morocco since 1900: Analysis of ecological requirements

2019 ◽  
Vol 30 (1) ◽  
pp. 117-138 ◽  
Author(s):  
ANDRE SCHENKER ◽  
FABIAN CAHENZLI ◽  
KARL G. GUTBROD ◽  
MICHEL THEVENOT ◽  
ANDREAS ERHARDT
Keyword(s):  
National Park ◽  
Satellite Images ◽  
Atlantic Coast ◽  
Bird Species ◽  
Earth Satellite ◽  
Google Earth ◽  
Mean Annual Precipitation ◽  
Breeding Sites ◽  
Ecological Requirements ◽  
Geronticus Eremita

SummaryThe Northern Bald Ibis (NBI) Geronticus eremita, is an ‘Endangered’ bird species of which only very few wild breeding colonies have survived along the Atlantic coast of south-west Morocco. This paper analyses ecological conditions of the 72 breeding sites of the NBI that have been known since 1900 in Morocco. Characterisation of breeding sites is based on physical criteria (elevation above sea level, geomorphology, mean annual precipitation and types of landscape) as well as land use, vegetation cover, infrastructure and types of settlement within three perimeters (0–1 km, > 1–5 km and > 5–10(20) km) using Google Earth satellite images. Statistical analyses of the number of breeding pairs, fledglings and rainfall during different quarters of the year from 1994 to 2016 in the two remaining breeding sites in Souss-Massa National Park and Tamri showed expected patterns as well as unexpected differences between the two localities. Based on our findings and indications in the literature, we suggest general and specific recommendations for potential future translocation projects of the NBI. Based on the analysis of the 28 breeding colonies existing after 1977, two elements emerge as the most important prerequisites: a low level of disturbances at the breeding sites and adequate feeding areas at a reasonable distance of 5–15 km.

scholarly journals Effects of bio-loggers on behaviour and corticosterone metabolites of Northern Bald Ibises (Geronticus eremita) in the field and in captivity

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Verena Puehringer-Sturmayr ◽  
Matthias-Claudio A. Loretto ◽  
Josef Hemetsberger ◽  
Tanja Czerny ◽  
Johannes Gschwandegger ◽  
...  
Keyword(s):  
In Captivity ◽  
Geronticus Eremita ◽  
Corticosterone Metabolites

Influence of feeding ecology on breeding success of a semi-wild population of the critically endangered Northern Bald Ibis Geronticus eremita in southern Turkey

2016 ◽  
Vol 27 (4) ◽  
pp. 537-549 ◽  
Author(s):  
CAN YENİYURT ◽  
STEFFEN OPPEL ◽  
SÜREYYA İSFENDİYAROĞLU ◽  
GÜLÇİN ÖZKINACI ◽  
ITRİ LEVENT ERKOL ◽  
...  
Keyword(s):  
Breeding Success ◽  
Supplementary Feeding ◽  
Management Approach ◽  
Past Century ◽  
Foraging Habitat ◽  
Tree Nursery ◽  
Breeding Station ◽  
Southern Turkey ◽  
In Captivity ◽  
Geronticus Eremita

SummarySafeguarding threatened species in captivity is a promising management approach, but evaluating the performance of captive programmes is essential to assess reintroduction potential. The eastern population of the Northern Bald Ibis, Geronticus eremita, used to be a locally common migratory bird species, but catastrophic population declines throughout the past century have resulted in a single population in southern Turkey that forages freely during summer but only survives in captivity during winter. We examined whether breeding success of this semi-wild colony was comparable to breeding success of previous wild populations, and to what extent breeding success was influenced by supplementary feeding and wild foraging in habitats near the breeding station. Average productivity from 2009 to 2015 was 1.12 fledglings per nesting pair (range 0.96–1.19). In 2013 and 2014, there was no correlation between attendance at supplementary feeding events and productivity, and breeding birds attended on average only 35% of supplementary feeding events. Birds that were frequently observed at a local tree nursery raised fewer offspring, while birds observed more frequently in poldered cultivation, and in particular in mint crops or in fields covered with manure, raised on average more offspring. Foraging success was highest in meadows and cropland, particularly in mint crops and fields covered in manure, and lowest at the tree nursery. We speculate that selection of highly suitable wild foraging habitat such as mint crops or fields covered in manure allows the Northern Bald Ibis to raise more fledglings than exclusive reliance on supplementary food provided at the breeding station. Establishing a second breeding colony of this species in Turkey will therefore require a careful assessment of the suitability of wild foraging habitat in the vicinity of suitable nesting opportunities.

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

Zoo Biology ◽  
2002 ◽  
Vol 21 (5) ◽  
pp. 467-480 ◽  
Author(s):  
Angelika Tintner ◽  
Kurt Kotrschal
Keyword(s):  
Social Influence ◽  
Nestling Development ◽  
Geronticus Eremita

scholarly journals Accounting for the low survival of the Critically Endangered northern bald ibisGeronticus eremitaon a major migratory flyway

Oryx ◽  
2014 ◽  
Vol 49 (2) ◽  
pp. 312-320 ◽  
Author(s):  
G. Serra ◽  
J. A. Lindsell ◽  
L. Peske ◽  
J. Fritz ◽  
C. G. R. Bowden ◽  
...  
Keyword(s):  
Satellite Telemetry ◽  
Bird Species ◽  
Range Shift ◽  
Critically Endangered ◽  
Conservation Action ◽  
Field Surveys ◽  
Critically Endangered Species ◽  
The Past ◽  
Geronticus Eremita ◽  
Wintering Areas

AbstractThe poor survival rate of immature northern bald ibisesGeronticus eremitaduring their first years spent outside the natal site is driving the last known wild colony of the migratory eastern population to extinction. To inform emergency conservation action for this Critically Endangered species we investigated the distribution range and behaviour of immature birds in passage and wintering areas, and the threats to which they are subject. We integrated recent satellite telemetry data with visual observations spanning 130 years. We assessed threats across the range, using satellite tracking and field surveys. Our results show that during the years before they return to the natal site in Syria, immature northern bald ibises reside away from the recently identified adult wintering site in the central Ethiopian highlands. They occur mainly across the northernmost 70–80% of the adult migratory range. Historical records suggest that immature birds spend more time along the western Arabian Peninsula now than in the past. This range shift exposes them for longer periods to threats, such as hunting and electrocution on power lines, which are absent from the wintering site used by adult birds. We suggest that other threatened and declining bird species sharing the same flyway probably face the same threats during migration.

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