| Titre : | Ornis Fennica 97(3) - September, 2020 |
| Type de document : | Bulletin |
| Paru le : | 01/09/2020 |
Dépouillements
Article
Grzegorz Neubauer, Auteur ;
Arkadiusz Sikora, Auteur
We investigated the performance of hierarchical distance sampling (HDS) versus binomial N-mixture (binmix) models, both aiming at abundance (or, equivalently, density) estimation. We tested the accuracy of density estimates using simulated data [...]
Article
Emilia Grzędzicka, Auteur
The increasing number of roads is an important threat to living organisms on a global scale, although research describing the influence of roads on the immune response of birds is lacking. The main purpose of this study was to examine the effect[...]
Article
Juha A. Markkola, Auteur ;
Risto T. Karvonen, Auteur
Migratory birds breeding at high latitudes face challenges in relation to timing of breeding vs. annual weather, climate change, and predator abundance. Hunting pressure along migration routes and wintering quarters forms an additional challenge[...]
Article
Timo Pakkala, Auteur ;
Juha Tiainen, Auteur ;
Heikki Pakkala, Auteur ;
Markus Piha, Auteur ;
Jari Kouki, Auteur
Woodpeckers are important species in forest ecosystems because they make tree cavities that are microhabitats for several other taxa. However, even in boreal areas where most tree cavities are made by wood-peckers, the properties of woodpeckers'[...]
