| # | Title | Journal | Year | Citations |
|---|
| 1 | Female choice selects for male sexual tail ornaments in the monogamous swallow | Nature | 1988 | 613 |
| 2 | Armaments and ornaments: an evolutionary explanation of traits of dual utility | Biological Journal of the Linnean Society | 1996 | 559 |
| 3 | Female swallow preference for symmetrical male sexual ornaments | Nature | 1992 | 470 |
| 4 | Pollination in Dianthus deltoides (Caryophyllaceae): Effects of Habitat Fragmentation on Visitation and Seed Set | Conservation Biology | 1988 | 462 |
| 5 | Female pied flycatchers choose territory quality and not male characteristics | Nature | 1986 | 397 |
| 6 | Reproductive effort reduces specific immune response and parasite resistance | Proceedings of the Royal Society B: Biological Sciences | 1998 | 367 |
| 7 | Male phenotype, fertility, and the pursuit of extra-pair copulations by female birds | Proceedings of the Royal Society B: Biological Sciences | 1994 | 349 |
| 8 | Haematological health state indices of reproducing Great Tits: methodology and sources of natural variation | Functional Ecology | 1998 | 340 |
| 9 | Trade-offs between life-history traits and a secondary sexual character in male collared flycatchers | Nature | 1995 | 316 |
| 10 | Sexual selection and the temporal separation of reproductive events: sperm storage data from reptiles, birds and mammals | Biological Journal of the Linnean Society | 1993 | 312 |
| 11 | Mate choice, fecundity and sexual dimorphism in two pipefish species (Syngnathidae) | Behavioral Ecology and Sociobiology | 1986 | 307 |
| 12 | Infectious diseases, reproductive effort and the cost of reproduction in birds | Philosophical Transactions of the Royal Society B: Biological Sciences | 1994 | 300 |
| 13 | Nerve growth factors in the rat iris | Nature | 1980 | 297 |
| 14 | Phenotype-dependent arrival time and its consequences in a migratory bird | Behavioral Ecology and Sociobiology | 1994 | 284 |
| 15 | Recent studies of avian sex ratios | Heredity | 1998 | 274 |
| 16 | Female space use is the best predictor of monogamy in mammals | Proceedings of the Royal Society B: Biological Sciences | 1997 | 270 |
| 17 | Paternal genetic contribution to offspring condition predicted by size of male secondary sexual character | Proceedings of the Royal Society B: Biological Sciences | 1997 | 251 |
| 18 | A Lyme borreliosis cycle in seabirds and Ixodes uriae ticks | Nature | 1993 | 233 |
| 19 | Sexual selection resulting from extrapair paternity in collared flycatchers | Animal Behaviour | 1999 | 233 |
| 20 | Acceleration of senescence in the collared flycatcher Ficedula albicollis by reproductive costs | Nature | 1990 | 231 |
| 21 | Decreased level of nerve growth factor (NGF) and its messenger RNA in the aged rat brain | Molecular Brain Research | 1987 | 222 |
| 22 | Ejaculate quality, testes size and sperm competition in primates | Journal of Human Evolution | 1988 | 222 |
| 23 | Viability costs of male tail ornaments in a swallow | Nature | 1989 | 222 |
| 24 | Why do males emerge before females? protandry as a mating strategy in male and female butterflies | Oecologia | 1982 | 210 |
| 25 | Effects of Parasitism by a Haematophagous Mite on Reproduction in the Barn Swallow | Ecology | 1990 | 206 |
| 26 | Certainty of paternity covaries with paternal care in birds | Behavioral Ecology and Sociobiology | 1993 | 200 |
| 27 | Patterns of variation in tail ornament size in birds | Biological Journal of the Linnean Society | 1988 | 187 |
| 28 | Lek size, male mating skew and the evolution of lekking | Nature | 1995 | 187 |
| 29 | Geographical Distribution, Host Associations, and Vector Roles of Ticks (Acari: Ixodidae, Argasidae) in Sweden | Journal of Medical Entomology | 1994 | 180 |
| 30 | Testes size, ejaculate quality and sperm competition in birds | Biological Journal of the Linnean Society | 1988 | 176 |
| 31 | Female sand gobies gain direct benefits by choosing males with eggs in their nests | Behavioral Ecology and Sociobiology | 1996 | 175 |
| 32 | Ornaments or offspring: costs to reproductive success restrict sexual selection processes | Biological Journal of the Linnean Society | 1995 | 174 |
| 33 | Male bird song attracts females ? a field experiment | Behavioral Ecology and Sociobiology | 1986 | 169 |
| 34 | Experimentally increased badge size increases male competition and reduces male parental care in the collared flycatcher | Proceedings of the Royal Society B: Biological Sciences | 1997 | 169 |
| 35 | Crypsis through disruptive coloration in an isopod | Proceedings of the Royal Society B: Biological Sciences | 1998 | 168 |
| 36 | Badge size in collared flycatchers predicts outcome of male competition over territories | Animal Behaviour | 1997 | 165 |
| 37 | Risky sex: male pipefishes mate at random in the presence of a predator | Animal Behaviour | 1993 | 160 |
| 38 | Fluctuating Asymmetry and Measurement Error | Systematic Biology | 1995 | 156 |
| 39 | Incompetence of Roe Deer as Reservoirs of the Lyme Borreliosis Spirochete | Journal of Medical Entomology | 1992 | 152 |
| 40 | Paternity and paternal care in the swallow, Hirundo rustica | Animal Behaviour | 1988 | 146 |
| 41 | Parasites differentially increase the degree of fluctuating asymmetry in secondary sexual characters | Journal of Evolutionary Biology | 1992 | 146 |
| 42 | Female sand gobies prefer good fathers over dominant males | Proceedings of the Royal Society B: Biological Sciences | 1997 | 144 |
| 43 | Variation in the song rate of the male pied flycatcher Ficedula hypoleuca: causes and consequences | Animal Behaviour | 1987 | 142 |
| 44 | Singing rate and female attraction in the pied flycatcher: an experiment | Animal Behaviour | 1990 | 139 |
| 45 | Haematological health state indices of reproducing Great Tits: a response to brood size manipulation | Functional Ecology | 1998 | 139 |
| 46 | Why do young passerine birds have shorter wings than older birds? | Ibis | 1984 | 138 |
| 47 | Interspecific competition increases local extinction rate in a metapopulation system | Nature | 1989 | 136 |
| 48 | Mosquito-borne viruses in western Europe: a review | Journal of Vector Ecology | 1999 | 135 |
| 49 | Badge size in the house sparrow Passer domesticus | Behavioral Ecology and Sociobiology | 1988 | 135 |
| 50 | Male tail length and female mate choice in the monogamous swallow Hirundo rustica | Animal Behaviour | 1990 | 133 |
