| Titre : | Ornis Fennica 88(4) - 2011 |
| Type de document : | Bulletin |
| Paru le : | 00/00/0000 |
Dépouillements
Article
Chiara Bettega, Auteur ;
Maria del Mar Delgado, Auteur ;
Letizia Campioni, Auteur ;
Paolo Pedrini, Auteur ;
Vincenzo Penteriani, Auteur
Replacement clutches can be crucial to the breeding success of avian species, although several factors may influence their outcome and the quality of chicks. Here we compare first and replacement clutches of Eagle Owls in terms of chick quality,[...]
Article
Saija Sirkia, Auteur ;
Ari Nikula, Auteur ;
Pekka Helle, Auteur ;
Harto Linden, Auteur ;
Kai Norrdahl, Auteur ;
Petri Suorsa, Auteur ;
Pentti Valkeajarvi, Auteur
Capercaillie (Tetra urogallus) has traditionally been considered an old forest-dependent species. The lekking sites especially, were thought to be located in older forests. We studied the persistence of Capercaillie lekking areas in relation to [...]
Article
Adam Kaliński, Auteur ;
Marcin Markowski, Auteur ;
Miroslawa Banbura, Auteur ;
Wioletta Mikus, Auteur ;
Joanna Skwarska, Auteur ;
Jaroslaw Wawrzyniak, Auteur ;
Michal Gladalski, Auteur ;
Piotr Zieliński, Auteur ;
Jerzy Bańbura, Auteur
The possible relationship between haemoglobin concentration and haematocrit were studied in 14-days-old Great Tit and Blue Tit nestlings in central Poland. From basic avian blood physiology it was expected that the correlation should be positive[...]
Article
Aleksi Lehikoinen, Auteur ;
Petteri Lehikoinen, Auteur ;
Andreas Linden, Auteur ;
Timo Laine, Auteur
White-backed Woodpecker Dendrocopos leucotos is an endangered specialist of mature deciduous forest in many European countries, including Finland. The Finnish population declined severely during the 20th century. We studied the population develo[...]
Article
Milla Hilli-Lukkarinen, Auteur ;
Markku Kuitunen, Auteur ;
Jukka Suhonen, Auteur
Effects of different land-use types on nutrient and chemical run-off have been widely researched, but the total effect of changes in land use on communities of aquatic species is poorly known. We evaluated the effect of land-use change on waterf[...]
Article
Ana R. Campos, Auteur ;
Paulo Catry, Auteur ;
Jaime Ramos, Auteur ;
Joana Robalo, Auteur
Competition for resources by individuals of different sexes, ages, body sizes or geographical origins may have varied implications, from demography to the evolution of migratory systems. European robins Erithacus rubecula display segregation by [...]
