caa a22 4500 463174984 CHVBK 20180406164823.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10336-006-0099-8 doi (NATIONALLICENCE)springer-10.1007/s10336-006-0099-8 Mitrus Cezary Department of Zoology, University of Podlasie, Prusa 12, 08-110, Siedlce, Poland aut Is the later arrival of young male red-breasted flycatchers ( Ficedula parva ) related to their physical condition? [Elektronische Daten] [Cezary Mitrus] Intraspecific variation in the arrival time of migratory birds to breeding grounds is common. Although this phenomenon has been explained in various ways, the condition-dependency of arrival is often evoked. I analyzed the arrival time of male red-breasted flycatchers Ficedula parva, a long-distance migratory passerine, in relation to age, body size and body condition. Data were collected over the course of 5years in the primeval Białowieża Forest of northeast Poland. Each of these years, young males arrived at the breeding grounds significantly later in the year than did older males. Young males also exhibited significantly shorter wings and lower body condition than older males. Settlement speed was significantly related to age, but not to wing length or body condition. Only the arrival time of old males was related to the body mass and condition. Later arrival of young males could be explained by the lack of experience or by avoidance of both aggression and competition from older males, and both explanations are thought to conserve energy for breeding. Young male red-breasted flycatchers exhibit delayed plumage maturation, and this duller plumage supports the strategy of restraint in the arrival time of young males in this species. Dt. Ornithologen-Gesellschaft e.V., 2006 Arrival time nationallicence Age nationallicence Body condition nationallicence Delayed plumage maturation nationallicence Journal of Ornithology Springer-Verlag 148/1(2007-01-01), 53-58 0021-8375 148:1<53 2007 148 10336 https://doi.org/10.1007/s10336-006-0099-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10336-006-0099-8 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Mitrus Cezary Department of Zoology, University of Podlasie, Prusa 12, 08-110, Siedlce, Poland aut NATIONALLICENCE 773 0- Journal of Ornithology Springer-Verlag 148/1(2007-01-01), 53-58 0021-8375 148:1<53 2007 148 10336 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer