O. G. Dely szerk.: Vertebrata Hungarica 1/1-2. (Budapest, 1959)
Horváth, L.: A szegélycönózis elve a madarak fészkelőközösségében 49-58. o.
The Principle of Marginal Coenoses in the Nidifying Communities of Birds By Dr. L. Horváth Zoological Department of the Hungarian National Mui»um, Budapest The paper deals with the nidifying communities of birds nesting in Hungary. As a result of earlier studies /10/, there can be established 38 nidifying communities in 9 landscape types. The total number of nidifying species, including the four new species observed and proved in the past three years, is 196. A painstaking examination of the 38 nidifying communities led to the result that 12 of them are marginal coenoses, that is, they have evolved within the bordering zone of areas with different kinds of vegetation. A thorough study of the 12 nidifying communities shown as marginal coenoses revealed the factors involved in their development. The most important of them are: hiding, feeding and homing. The twelve nidifying communities are as follows: Dryobates maio r, Coccothraustes coccothrauste a . K otacllXa cinere a, Sylvia atricapill a, Locuetella fluvlatili s, Buteo bute o, Corvua frugllegu s, Lanius mino r, Lanlus colluri o. Circus pyaargu s, Accocephalus schoenobaenu s, Acrocephalus arundinaceu s. The species shown recently fit well into the nidifying communities found hitherto; namely Carduelis spinu a, Loxia curviroetr a, Parus eristatu s and Tetrao urosallu s nay be familiar members of the Phylloscopus aibilatrix nidifying community settled in tall, eventually interrupted pine woods or cixed coniferous-deciduouB foreBts,
