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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	On the Masked Shrike Lanius nubicus during three breeding seasons in Cyprus (2017)
Auteurs :	N Lefranc, Auteur
Type de document :	Article
Dans :	Alauda (85(1) janvier 1, 2017)
Article en page(s) :	241-252
Résumé :	Three stays in Cyprus in 1997,1998 and 2002 totalling 42 days in all, were devoted almost entirely to detailed observations (distribution, habitat, breeding, behaviour) of Lanius nubicus, still a relatively little known shrike. Breeding pairs were found between 220m and 1950 m asi, but it was clear that breeding at low altitudes was rare and that most populations occurred between 500 and 1,910m, particularly on the slopes of the Troodos mountains. The species showed good densities in more or less open Pinus bmtia, or, at altitudes greater than 1,200m, in Pinus nigra forests (or mixed forests) with, or without a ground vegetation rich in shrubs (particularly of Golden Oak Quercus ai-nifolia). Remarkably, towards the highest altitudes the most common birds in shrike territories were typical forest birds: Coal Tits, Chaffinches and Short-toed Treecreepers. Masked Shrikes could also be found in semi-open habitats, resembling typical Lanius sp. habitats; for instance in the Akamas peninsula at 220m asl, a pair was found nesting in a very open carob plantation (a tree c. every 15m and bare soil), not far from a breeding pair of Woodchats Lanius senator (rare in Cyprus). A total of 36 nests were found on 8 different tree species (see table). Apart from two exceptions, the nests were built on lateral branches (sometimes very long in the case of big, old pines), generally rather far from the trunk (between 1 and 5.5m). The average nest height was 5.5m high (extremes 1,65m in an olive tree and 14m in a Pinus bru-tia). The distances between occupied nests can be relatively small as was the case within an official picnic site (Armyroleivadon 1600m asl), where in 1998, four nests aligned in an almost straight line were separated by c. 170,210 and 190m. In 2002, at the same site, three nests were separated by only 125 and 130m. The size of the breeding territories was estimated to vary between 1 (or a little less) and 2ha. The duration of 29 songs was also timed; they lasted 34 s on average (extremes at 5 & 79 s). Few precise data could be obtained from food that is worth mentioning but for the capture of two Snake-eyed Skinks Ablepharus budaki.

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