Hans Joachim Fünfstück

The formerly Olivaceus warbler species is, today, splitted into the Eastern (pallida)/Western (opaca) Olivaceus warbler, breeding respectively in SE and SW Europe (Keller et al. 2020). Long-distance migratory species wintering, respectively, in W and E Africa (Kennerley & Pearson 2010).

Season of assessment

B

Population trendUnknown
Population size
(min-max, best estimate)		6510000-13600000,9360000
Red List categoryLC
Franks, S., Fiedler, W., Arizaga, J., Jiguet, F., Nikolov, B., van der Jeugd, Ambrosini, R, Aizpurua, O., Bairlein, F., Clark, J., Fattorini, N, Hammond, M., Higgins, D, Levering, H., Skellorn, W., Spina, F, Thorup, K. Walker, J., Woodward, I. and Baillie, S.R. (1) (2022) Online Atlas of the movements of European bird populations. https://migrationatlas.org EURING/CMS (1) Principal investigator
Map

Overall Connectivity for Eastern Olivaceous Warbler

Few recovery data, most show within-Europe (short-range) movements (either dispersal or true migratory movements in their route to or from Africa).Note that many ring-recovery data come from times when the Eastern Olivaceous Warbler belonged to the same species than the current Western Olivaceous Warbler. SW European birds (today, they belong to Western Olivaceous Warbler) show clear NE-SW axis of migration, with some recoveries in NW Africa (Morocco) and two in Senegambia (for more info see also Baker 1997). SE European birds show (true Eastern Olivaceus Warbler) what seems to be SE axis of migration; a recovery from Israel in Cyprus. Literature states that SE European birds overwinter from NE/E Africa to W Arabia (Kennerly & Pearson 2010).

Recoveries by Condition for Eastern Olivaceous Warbler

No data before 1960. Between 1961-1990, 98% of the recoveries due to ringing, only 2% as dead recovery due to shooting. Nowadays, 100% of recoveries associated to recaptures of birds alive under ringing programs.

Annual Movements for Eastern Olivaceous Warbler

First movements after breeding found in Jul-Aug. For the SW population, passage through NW Africa in autumn until at least Sep, probably also later even no data available. Wintering in Senegambia at least from Nov to Mar. Passage across NW Africa in spring patent in Apr (Arizaga et al. 2012).

Connectivity by Month by Region for Eastern Olivaceous Warbler

SE population: Individuals ringed in Israel in Apr and Jun; recovery from Cyprus in Apr.

SW population: data from Spain mostly from May to Aug (though a bird from the Balearics, ringed in May, recovered in mainland Spain in Oct); from NW Africa, from Jun to Sep; from Senegambia, from Nov to Mar.

Olatz Aizpurua & Juan Arizaga

References

Statistics Map
N records N individuals N recoveries
Mapped data*
Total available data
*Mapped data include only distant (>= 50 km) recoveries
References Map
2020 . European Breeding Bird Atlas 2: Distribution, Abundance and Change. European Bird Census Council & Lynx Edicions, BarcelonaEditor(s): Keller, V., S. Herrando, P. Voříšek, et al.
Arizaga, J., Maggini, I., Hama, F., Crespo, A., Gargallo, G.2012 . Site- and species-specific fuel load of European–Afrotropical passerines on arrival at three oases of southeast Morocco during spring migration. Bird Study 60: 11–21
Baker, K1997 . Warblers of Europe, Asia and North Africa. ISBN: 978-0713639711Gardners Books 360pp
Kennerley, P. & Pearson, D. 2010 . Reed and Bush Warblers. Helm Identification Guides. ISBN: 978-0-71366022-7A & C Black, London 712pp

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