| Population genetic structure of male black grouse (Tetrao tetrix L.) in fragmented vs. continuous landscapes A Caizergues, O Rätti, P Helle, L Rotelli, L Ellison, JY Rasplus Molecular Ecology 12 (9), 2297-2305, 2003 | 147 | 2003 |
| Extra-pair paternity and male characteristics in the pied flycatcher O Rätti, M Hovi, A Lundberg, H Tegelström, RV Alatalo Behavioral Ecology and Sociobiology 37, 419-425, 1995 | 122 | 1995 |
| Sindbis virus infection in resident birds, migratory birds, and humans, Finland S Kurkela, O Rätti, E Huhtamo, NY Uzcátegui, JP Nuorti, J Laakkonen, ... Emerging infectious diseases 14 (1), 41, 2008 | 121 | 2008 |
| A trade-off between current reproduction and moult in the pied flycatcher--an experiment P Siikamäki, M Hovi, O Rätti Functional Ecology, 587-593, 1994 | 121 | 1994 |
| Population cycles and outbreaks of small rodents: ten essential questions we still need to solve HP Andreassen, J Sundell, F Ecke, S Halle, M Haapakoski, H Henttonen, ... Oecologia 195, 601-622, 2021 | 106 | 2021 |
| Blood parasites and male fitness in the pied flycatcher O Rätti, R Dufva, RV Alatalo Oecologia 96, 410-414, 1993 | 102 | 1993 |
| Multiple indicators of human impacts on the environment in the Pechora Basin, north-eastern European Russia TR Walker, PD Crittenden, VA Dauvalter, V Jones, P Kuhry, O Loskutova, ... Ecological indicators 9 (4), 765-779, 2009 | 84 | 2009 |
| Association between haematozoan infections and reproduction in the pied flycatcher P Siikamäki, O Rätti, M Hovi, GF Bennett Functional Ecology 11 (2), 176-183, 1997 | 77 | 1997 |
| Combs and sexual selection in black grouse (Tetrao tetrix) PT Rintamäki, J Höglund, E Karvonen, RV Alatalo, N Björklund, ... Behavioral Ecology 11 (5), 465-471, 2000 | 76 | 2000 |
| Sex and age influence intestinal parasite burden in three boreal grouse species M Isomursu, O Rätti, P Helle, T Hollmén Journal of Avian Biology 37 (5), 516-522, 2006 | 52 | 2006 |
| Lack of genetic structuring and subspecies differentiation in the capercaillie (Tetrao urogallus) in Finland T Liukkonen-Anttila, O Rätti, L Kvist, P Helle, M Orell Annales Zoologici Fennici, 619-633, 2004 | 44 | 2004 |
| No evidence for effects of breeding density and male removal on extrapair paternity in the pied flycatcher O Rätti, A Lundberg, H Tegelström, RV Alatalo The Auk 118 (1), 147-155, 2001 | 44 | 2001 |
| Context-dependent effects of tail-ornament damage on mating success in black grouse J Höglund, RV Alatalo, A Lundberg, O Rätti Behavioral Ecology 5 (2), 182-187, 1994 | 43 | 1994 |
| Age Differences in the Response of Willow Tits (Parus montanus) to Conspecific Alarm Calls M Rajala, O Rätti, J Suhonen Ethology 109 (6), 501-509, 2003 | 40 | 2003 |
| Properties of food loads delivered to nestlings in the pied flycatcher: effects of clutch size manipulation, year, and sex P Siikamäki, J Haimi, M Hovi, O Rätti Oecologia 115, 579-585, 1998 | 40 | 1998 |
| Mate sampling and assessment procedures in female pied flycatchers (Ficedula hypoleuca) M Hovi, O Rätti Ethology 96 (2), 127-137, 1994 | 39 | 1994 |
| Orthomyxo-, paramyxo-and flavivirus infections in wild waterfowl in Finland E Lindh, A Huovilainen, O Rätti, C Ek-Kommonen, T Sironen, E Huhtamo, ... Virology Journal 5, 1-15, 2008 | 36 | 2008 |
| Male polyterritoriality and imperfect female choice in the pied flycatcher, Ficedula hypoleuca RV Alatalo, A Lundberg, O Ritti Behavioral Ecology 1 (2), 171-177, 1990 | 35 | 1990 |
| Parasitized grouse are more vulnerable to predation as revealed by a dog-assisted hunting study M Isomursu, O Rätti, P Helle, T Hollmén Annales Zoologici Fennici 45 (6), 496-502, 2008 | 33 | 2008 |
| Susceptibility to intestinal parasites and juvenile survival are correlated with multilocus microsatellite heterozygosity in the Capercaillie (Tetrao urogallus) M Isomursu, O Rätti, T Liukkonen, P Helle Ornis Fennica 89 (2), 109–119-109–119, 2012 | 22 | 2012 |
