Ali UZUN, Zehra AYYILDIZ, Faruk YILMAZ, Belgin UZUN, Mehmet SAĞIROĞLU

Breeding ecology and behaviour of the Great Reed Warbler, Acrocephalus arundinaceus, in Poyrazlar Lake, Turkey

In this study, the breeding ecology and behaviour of the Great Reed Warbler, Acrocephalus arundinaceus, was studied at Poyrazlar Lake, Turkey. The breeding period started in the first week of May. The incubation period lasted 14 days. As clutch size increased, the diameter of the nests became larger (r = 0.65). Diameters of nests containing different clutch sizes varied significantly from one another (P < 0.01). However, their height did not change (r = 0.24). There was no significant height difference between nests containing different clutch sizes (P > 0.05). As the nests became farther from the shore, the clutch size and the egg weight increased, because mature adults built their nests on the reeds in deeper areas (r = 0.59, r = 0.73). On the other hand, young breeders showed no location preference in their choice of nest site. The number of the nests showed a positive correlation with the height of reeds (r = 0.80). In all nests, 4 different behaviours (Nest Empty, Sitting, Edge of Nest Waiting, Feeding Nestlings) were observed from the appearance of the first egg until the female left the nest. On average, a given female spent 38.11% of her time away from the nest, 51.84% of her time in incubation, 0.91% of her time around the nest, and 9.24% feeding her nestlings per day.

Anahtar Kelimeler:

Key words: Great Reed Warbler, breeding, ecology, Poyrazlar Lake, Turkey

Breeding ecology and behaviour of the Great Reed Warbler, Acrocephalus arundinaceus, in Poyrazlar Lake, Turkey

Keywords:

breeding, ecology, Poyrazlar Lake, Turkey, Great Reed Warbler,

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Batáry P, Winkler H, Báldi A (2004). Experiments with artificial nests on predation in reed habitats. J Ornithol 145: 59–63.
Benassi G, Battisti C, Luiselli L, Boitani L (2009). Area-sensitivity of three reed bed bird species breeding in Mediterranean marshland fragments. Wetl Ecol Manag 17: 555–564.
Bensch S, Hasselquist D (1991). Nest predation lowers the polygyny threshold: a new compensation model. Am Nat 138: 1297– 130
Bensch S, Hasselquist D (1994). Higher rate of nest loss among primary than secondary females: infanticide in the great reed warbler? Behav Ecol Socıobiol 35: 309–317.
Charnov EL, Krebs JR (1974). On clutch size and fitness. Ibis 116: 217–219.
Del Hoyo J, Elliott A, Christie DA (2006). Handbook of the Birds of the World, Volume 11: Old World Flycatchers to Old World Warblers. Barcelona: Lynx Edicions.
Dyrcz A (1986). Factors affecting facultative polygyny and breeding results in the great reed warbler (Acrocephalus arundinaceus). J Ornithol 127: 447–461.
Dyrcz A (1995). Breeding biology and ecology of different European and Asian populations of the Great Reed Warbler Acrocephalus arundinaceus. Jpn J Ornithol 44: 123–142.
Dyrcz A, Nagata H (2002). Breeding ecology of the Eastern Great Reed Warbler Acrocephalus arundinaceus orientalis at Lake Kasumigaura, Central Japan. Bird Study 49: 166–171.
Ezaki Y (1990). Female choice and the causes and adaptiveness of polygyny in great reed warblers. J Anim Ecol 59: 103–119.
Ezaki Y, Urano E (1995). Intraspecific comparison of ecology and mating system of the Great Reed Warbler Acrocephalus arundinaceus: why different results from different populations? Jpn J Ornithol 44: 107–122.
Gavrilov EI, Gavrilov AE (2005). The Birds of Kazakhstan (abridged edition). Vol. II. Almaty: Tethys Society.
Hansson B, Bensch S, Hasselquist D (2000). Patterns of nest predation contribute to polygyny in the great reed warbler. Ecology 81: 319–328.
Hasselquist D, Bensch S, Von Schantz T (1996). Correlation between male song repertoire, extra-pair paternity and offspring survival in the great reed warbler. Nature 381: 229–232.
Krüger O (2005). Age at first breeding fitness in goshawk Accipiter gentilis. J Anim Ecol 74: 266–273.
Martin TE (1993). Nest predation and nest sites: new perspectives and old patterns. Bioscience 43: 523–532.
Seitz LC, Zegers DA (1993). An experimental study of nest predation in adjacent deciduous, coniferous and successional habitats. Condor 95: 297–304.
Sejberg D, Bensch S, Hasselquis D (2000). Nestling provisioning in polygynous great reed warblers (Acrocephalus arundinaceus): do males bring larger prey to compensate for fewer nest visits? Behav Ecol Sociobiol 47: 213–219.
Simms E (1985). British Warblers. London: Collins.
Thompson FR, Burhans DE (2003). Predation of songbird nests differs by predator and between field and forest habitats. J Wildlife Manage 67: 408–416.
Traylor MA, Parelius D (1967). A collection of birds from the Ivory Coast. Fieldiana Zool 5: 91–117.
Trewartha GT (1954). An Introduction to Climate. 3rd ed. New York: McGraw-Hill.
Trnka A, Batáry P, Prokop P (2009). Interacting effects of vegetation structure and breeding patterns on the survival of Great Reed Warbler Acrocephalus arundinaceus nests. Ardea 97: 109–116.
Urano E (1990). Factors affecting the cost of polygynous breeding for female great reed warblers Acrocephalus arundinaceus. Ibis 132: 584–594.
Uzun A, Tabur MA, Ayvaz Y (2010). Poyrazlar gölü ornitofaunası. Tabiat ve İnsan Dergisi 12: 1–14 (article in Turkish).