Aves, p�le ornithologique de Natagora

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Aves, 23/1 | 1986 | 1-11

  1984, 1985 : following up the progression of the Melodious Warbler (Hippolais polyglotta) in the Walloon country.
Jacob, J.-P.

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Expansion was rapid : in 1984-85, of particular note was the advance on the northern flank of the Ardenne, the expansion in the Couvin region and the appearance in Mid-Belgium in 1985. The total population greatli increased : 66 birds occupying territories or nesting pairs were counted both in 1984 and 1985, but it was estimated that the real population exceeded at least a hundred pairs. Information on the locations occupied were discussed. The habitats were entirely of a transitory nature and often of artificial origin. There was no apparent link between the advance of the Melodious Warbler and the retreat of the Icterine Warbler (Hippolais icterina), this latter phenomenon having commenced at an earlier date and the habitats occupied by each species differ on average.

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