| Haematological health state indices of reproducing great tits: methodology and sources of natural variation I Ots, A Murumägi, P Horak Functional Ecology 12 (4), 700-707, 1998 | 414 | 1998 |
| Immune challenge affects basal metabolic activity in wintering great tits I Ots, AB Kerimov, EV Ivankina, TA Ilyina, P Hõrak Proceedings of the Royal Society of London. Series B: Biological Sciences …, 2001 | 254 | 2001 |
| How feather colour reflects its carotenoid content L Saks, K McGRAW, P Hõrak Functional Ecology 17 (4), 555-561, 2003 | 209 | 2003 |
| Carotenoid-based plumage coloration reflects hemoparasite infection and local survival in breeding great tits P Hõrak, I Ots, H Vellau, C Spottiswoode, AP Møller Oecologia 126 (2), 166-173, 2001 | 207 | 2001 |
| Immune function and survival of great tit nestlings in relation to growth conditions P Hõrak, L Tegelmann, I Ots, AP Møller Oecologia 121 (3), 316-322, 1999 | 190 | 1999 |
| Carotenoid-based plumage coloration of male greenfinches reflects health and immunocompetence L Saks, I Ots, P Hõrak Oecologia 134 (3), 301-307, 2003 | 188 | 2003 |
| Great tits Parus major trade health for reproduction I Ots, P Horak Proceedings of the Royal Society of London. Series B: Biological Sciences …, 1996 | 184 | 1996 |
| Haematological health state indices of reproducing Great Tits: a response to brood size manipulation P Hõrak, I Ots, A Murumägi Functional Ecology 12 (5), 750-756, 1998 | 180 | 1998 |
| Immune response is energetically costly in white cabbage butterfly pupae D Freitak, I Ots, A Vanatoa, P Hörak Proceedings of the Royal Society of London. Series B: Biological Sciences …, 2003 | 168 | 2003 |
| Health impact of blood parasites in breeding great tits I Ots, P Hõrak Oecologia 116 (4), 441-448, 1998 | 159 | 1998 |
| How coccidian parasites affect health and appearance of greenfinches P Hõrak, L Saks, U Karu, I Ots, PF Surai, KJ McGRAW Journal of Animal Ecology 73 (5), 935-947, 2004 | 129 | 2004 |
| Do dietary antioxidants alleviate the cost of immune activation? An experiment with greenfinches P Horak, L Saks, M Zilmer, U Karu, K Zilmer The American Naturalist 170 (4), 625-635, 2007 | 127 | 2007 |
| Antioxidant protection, carotenoids and the costs of immune challenge in greenfinches P Hõrak, M Zilmer, L Saks, I Ots, U Karu, K Zilmer Journal of Experimental Biology 209 (21), 4329-4338, 2006 | 116 | 2006 |
| Repeatability of condition indices in captive greenfinches (Carduelis chloris) P Hõrak, L Saks, I Ots, H Kollist Canadian Journal of Zoology 80 (4), 636-643, 2002 | 102 | 2002 |
| Growth conditions affect carotenoid-based plumage coloration of great tit nestlings P Hõrak, H Vellau, I Ots, AP Møller Naturwissenschaften 87 (10), 460-464, 2000 | 100 | 2000 |
| How to measure oxidative stress in an ecological context: methodological and statistical issues P Hõrak, A Cohen Functional Ecology 24 (5), 960-970, 2010 | 91 | 2010 |
| Heterophil/lymphocyte ratios predict the magnitude of humoral immune response to a novel antigen in great tits (Parus major) I Krams, J Vrublevska, D Cirule, I Kivleniece, T Krama, MJ Rantala, E Sild, ... Comparative Biochemistry and Physiology Part A: Molecular & Integrative …, 2012 | 86 | 2012 |
| Survival of adult Great Tits Parus major in relation to sex and habitat; a comparison of urban and rural populations P Horak, JD LEBRETON Ibis 140 (2), 205-209, 1998 | 79 | 1998 |
| Oxidative stress and information content of black and yellow plumage coloration: an experiment with greenfinches P Hõrak, E Sild, U Soomets, T Sepp, K Kilk Journal of Experimental Biology 213 (13), 2225-2233, 2010 | 75 | 2010 |
| 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 | 74 | 1995 |
Lauri SaksUniversity of TartuVerified email at ut.ee
