| Climate variation and regional gradients in population dynamics of two hole-nesting passerines BE Sæther, S Engen, AP Møller, E Matthysen, F Adriaensen, W Fiedler, ... Proceedings of the Royal Society of London. Series B: Biological Sciences …, 2003 | 88 | 2003 |
| Egg size in the Great Tit Parus major: individual, habitat and geographic differences P Hõrak, R Maend, I Ots, A Leivits Ornis fennica 7 (3), 97-114, 1995 | 75 | 1995 |
| Effect of calcium availability and habitat quality on reproduction in pied flycatcher Ficedula hypoleuca and great tit Parus major V Tilgar, R Mänd, A Leivits Journal of Avian Biology, 383-391, 1999 | 65 | 1999 |
| Calcium, snails, and birds: a case study R Mänd, V Tilgar, A Leivits Web Ecology 1 (1), 63-69, 2000 | 51 | 2000 |
| Reproductive response of Great Tits, Parus major, in a naturally base-poor forest habitat to calcium supplementation R Mänd, V Tilgar, A Leivits Canadian Journal of Zoology 78 (5), 689-695, 2000 | 39 | 2000 |
| Provision of nestboxes raises the breeding density of Great Tits Parus major equally in coniferous and deciduous woodland R MÄND, A Leivits, M Leivits, NL Rodenhouse Ibis 151 (3), 487-492, 2009 | 37 | 2009 |
| Status and numbers of Estonian birds, 2003–2008 J Elts, A Kuresoo, E Leibak, A Leito, A Leivits, V Lilleleht, L Luigujõe, ... Hirundo 22 (1), 3-32, 2009 | 35 | 2009 |
| Comparative analysis of long-term monitoring data on numbers of passerines in nine European countries in the second half of the 20th century LV Sokolov, J Baumanis, A Leivits, AM Poluda, VD Yefremov, ... Avian Ecol. Behav 7, 41-74, 2001 | 30 | 2001 |
| Tick-borne pathogens in ticks feeding on migratory passerines in western part of Estonia J Geller, L Nazarova, O Katargina, A Leivits, L Järvekülg, I Golovljova Vector-Borne and Zoonotic Diseases 13 (7), 443-448, 2013 | 26 | 2013 |
| Numbers and distribution of Whooper Swans breeding, wintering and on migration in Estonia, 1990-2000 L Luigujõe, A Kuresoo, A Leivits Waterbirds, 61-66, 2002 | 25 | 2002 |
| Status and numbers of Estonian birds, 2008–2012 J Elts, A Leito, A Leivits, L Luigujõe, E Mägi, R Nellis, R Nellis, M Ots, ... Hirundo 26 (2), 80-112, 2013 | 24 | 2013 |
| Eesti lindude staatus, pesitsusaegne ja talvine arvukus 2008.-2012. a J Elts, A Leito, A Leivits, L Luigujõe, E Mägi, R Nellis, R Nellis, M Ots, ... Hirundo 26 (2), 80-112, 2013 | 24 | 2013 |
| Status and numbers of Estonian birds A Lõhmus, A Kuresoo, E Leibak, A Leito, V Lilleleht, M Kose, A Leivits, ... Hirundo 11 (2), 1998, 1998 | 20* | 1998 |
| Forms of density regulation and (quasi‐) stationary distributions of population sizes in birds BE Sæther, S Engen, V Grøtan, T Bregnballe, C Both, P Tryjanowski, ... Oikos 117 (8), 1197-1208, 2008 | 19 | 2008 |
| Population number dynamics 1961-1990 of Sylvia species caught during autumn migration at some North and Central European bird stations P Busse, J Baumanis, A Leivits, H Pakkala, VA Payevsky, M Ojanen The Ring 17 (1-2), 1995 | 15 | 1995 |
| Eesti lindude staatus, pesitsusaegne ja talvine arvukus 2003–2008 J Elts, A Kuresoo, E Leibak, A Leito, A Leivits, V Lilleleht, L Luigujõe, ... Hirundo 22 (1), 3-31, 2009 | 13 | 2009 |
| Body mass, moult and migration speed of the Goldcrest Regulus regulus in relation to the timing of migration at different sites of the migration route J Bojarinova, A Ilves, N Chernetsov, A Leivits Ornis Fennica 85 (2), 55-65, 2008 | 13 | 2008 |
| Breeding in calcium-poor habitats: are there any extra costs? V Tilgar, R Mand, A Leivits Acta Ornithologica 34 (2), 215-218, 1999 | 13 | 1999 |
| Substantial decline of Northern European peatland bird populations: Consequences of drainage S Fraixedas, A Lindén, K Meller, Å Lindström, O Keišs, JA Kålås, M Husby, ... Biological conservation 214, 223-232, 2017 | 12 | 2017 |
| Field studies of directional preferences of the Reed Warbler (Acrocephalus scirpaceus) and the Sedge Warbler (A. schoenobaenus) on autumn migration along the eastern and … A Trociñska, A Leivits, C Nitecki, I Shydlovsky The Ring 23 (1-2), 2001 | 11 | 2001 |
