Hippolais olivetorum
Habitats | Parks & Woodlands, Bush & Garrigue |
---|---|
Presence In Israel | Summer Breeder |
Nesting In Israel | Breeder |
Migration Types | Long Range |
Zoography Zones | Mediterranean |
Landscape Formations | Mountainous |
Vegetation Formations | Mediterranean Maquis, Mediterranean Garrigue |
Vegetation Densities | Low, Medium |
Nest Locations | Tree |
Diet Types | Invertebrate |
Foraging Grounds | Trees and Shrubs |
Body Sizes | Small (up to 500g) |
Threat Factors | Unknown |
The Olive-tree Warbler is the largest Hippolais warbler, with long legs and a long tail. Upperparts are dark grey-olive and underparts are whitish. It has long wings and a particularly long primary projection. The pale margins of the secondaries and tertials form a prominent pale patch in the center of the wing.
An extremely rare summer breeder in the Upper Galilee, migrating through Israel in small numbers. According to records from the 19th and early 20th centuries, it was once a summer visitor in central and northern Israel. It was re-discovered as a breeder only in the early 1990s in the Upper Galilee, from Mt. Meron, north and west to the Lebanese border (Gideon Sigali & Itai Shimshon, pers. comm., Shirihai 1996). The most recent records of breeding in Israel are from the early 2000s (Efraim Ezov & Yoav Perlman, pers. comm.).
The factors threatening the Olive-tree Warbler population are not known, and most of the habitats it occupies in the Galilee have not changed significantly during the past two decades. The Upper Galilee is the southern limit of the global population range and the species may be affected by global factors such as climate change, whose effect is greater in edge populations.
No specific conservation measures have been taken for this species to date.
The Olive-tree Warbler is classified as Critically Endangered (CR). There are no records of nesting in recent years, and the species is probably extinct as a breeder in Israel. Efforts should be made to locate breeding populations in Israel in order to obtain a better assessment of its status and to make decisions regarding its conservation.
A comprehensive survey should be conducted in the areas where the Olive-tree Warbler nested in the past, to try and locate relictual populations and to develop a management program for their preservation.
- פז, ע. 1986. עופות. מתוך אלון, ע. (עורך), החי והצומח של ארץ ישראל. כרך 6. הוצאת משרד הביטחון, ישראל.
- Shirihai, H., 1996. The Birds of Israel. Academic Press, London.
- Symes, A. 2013. Species generation lengths. Unpublished, BirdLife International.
- Species page at Birdlife International
Current Occupancy Map
Distribution maps
The maps presented here provide visual information on the distribution of species in Israel in the past and present, and the changes in occupancy and nesting density during the comparison period. For further reading
Relative Abundance 2010-2020
Breeding density values as calculated from observation records and expert opinions.
Relative Abundance 1980-1990
Breeding density values are based mainly on the book Birds of Israel (Shirihai 1996).
Occupancy difference 1990-2020
A map that expresses differences in the breeding distribution between the evaluation periods (1980-1990 versus 2010-2020). Negative value - species previously present but is currently absent, positive value - species has not been recorded previously and is currently present, zero - no change in occupancy.
Relative abundance difference 1990-2020
A map that reflects the changes in the relative abundance of the species between the evaluation periods (1980-1990 versus 2010-2020). Negative values - decline in abundance, positive values - increase in abundance, zero - no change in abundance.
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