Scientific Journal of the BirdLife Hungary

A Magyar Madártani és Természetvédelmi Egyesület tudományos folyóirata

Ornis Hungarica. vol.7. (1997) p.43-47.

Spatial distribution of migrating Sedge Warblers (Acrocephalus schoenobaenus) in a Hungarian reed bed
J. Gyurácz and L. Bank

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Data from a ringing program in a south Hungarian reed swamp were used to analyse the horizontal and vertical distribution of juvenile and adult Sedge Warblers during autumn migration. The horizontal spatial pattern of the juvenile birds showed clumped distribution in the reed bed. 492 (35%) juvenile and 59 (20%) adult Sedge Warblers were trapped in three nets. The horizontal distribution of adults was spaced evenly. The vertical spatial distribution of the age classes were significantly clumped. Investigate of food dispersion in a reed bed, vegetation structure and interspecific competition among reed warblers are required for complete comprehension of spatial pattern of migrating Sedge Warblers.