1. Why do young passerine birds have shorter wings than older birds?;Alatalo;Die Vogelwelt,1984
2. Die Gelegegrösse des Trauerschnäppers (Ficedula hypoleuca) in Beziehung zu Ort, Ziet, Biotop und Alter;Berndt;Die Vogelwelt,1967
3. Les jeunes habitent petit ou impact de la réduction du volume intérieur du nichoir sur le comportement ?une population nicheuse ?étourneax sansonnets (Sturnus vulgaris L.);Clobert;Annls. Soc. r. zool. Belg.,1983
4. A trial with nest-boxes for the treecreeper Certhia familiaris.;Enemar;Vår Fågelvärld,1981
5. The feeding ecology of the nestling great tit, Parus major minor, in the temperate evergreen broad-leaved forest. I. Food consumption and maintenance cost;Eguchi;J. Yamashina Inst.,1980