• Nem Talált Eredményt

Alexander R.D. 1974. The evolution of social behavior. Annu. Rev. Ecol. Syst. 5, 324–383.

Altwegg R., Ringsby T.H. & Sæther B.-E. 2000. Phenotypic correlates and consequences of dispersal in a metapopulation of house sparrows, Passer domesticus. J. Anim. Ecol.

69, 762–770.

Anderson T. R. 2006. Biology of the Ubiquitous House Sparrow: From Genes to Populations.

Oxford University Press, Oxford.

Baglione V., Canestrari D., Marcos J.M. & Ekman J. 2003. Kin selection in cooperative alliances of carrion crows. Science 300, 1947–1949.

Barnard C.J. & Sibly R.M. 1981. Producers and scroungers: a general model and its application to captive flocks of house sparrows. Anim. Behav. 29, 543–550.

Barta Z., Liker A. & Mónus F. 2004. The effects of predation risk on the use of social foraging tactics. Anim. Behav. 67, 301–308.

Beer J.R. 1961. Winter feeding patterns in the house sparrow. Auk 78, 63-71.

Black J.M. & Owen M. 1989. Parent-offspring relationships in wintering barnacle geese.

Anim. Behav. 37, 187–198.

Bókony V., Lendvai Á.Z. & Liker A. 2006. Multiple cues in status signalling: the role of wingbars in aggressive interactions of male house sparrows. Ethology 112, 947–954.

Bókony V., Liker A., Lendvai Á.Z. & Kulcsár A. 2008. Risk-taking and survival in the house sparrow, Passer domesticus: are plumage ornaments costly? Ibis 150, 139–151.

Borgatti S.P., Everett M.G. & Freeman L.C. 2002. Ucinet for Windows: software for social network analysis. Analytic Technologies, Harvard. URL: http://www.analytictech.com Bourke A.F.G. & Franks N.R. 1995. Social Evolution in Ants. Princeton University Press,

Princeton, New Jersey.

Box G.E.P. & Cox D.R. 1964. An analysis of transformations. J. Roy. Statist. Soc. Ser. B 26, 211–246.

Breitwisch R. & Hudak J. 1989. Sex differences in risk-taking behavior in foraging flocks of house sparrows. Auk 106, 150–153.

Burley N., Minor C. & Strachan C. 1990. Social preference of zebra finches for siblings, cousins and non-kin. Anim. Behav. 39, 775–784.

Butovskaya M. 1993. Kinship and different dominance styles in groups of three species of the genus Macaca (M. arctoides, M. mulatta, M. fascicularis). Folia. Primatol. 60, 210–

224.

Butts C.T. 2008. Social Network Analysis with sna. J. Stat. Soft. 24, 6.

Cairns S. J. & Schwager S. J. 1987. A comparison of association indices. Anim. Behav. 35, 1454–1469.

Caraco T., Barkan C., Beacham J.L., Brisbin L., Lima S., Mohan A., Newman J.A., Webb W.

& Whithiam M.L. 1989. Dominance and social foraging: a laboratory study. Anim.

Behav. 38, 41–58.

Casinello J. & Calabuig G. 2008. Spatial association in a highly inbred ungulate population:

evidence of fine-scale kin recognition. Ethology 114, 124–132.

Chapais B. 1992. The role of alliances in social inheritance of rank among female primates.

In: Coalitions and Alliances in Humans and Other Animals (Eds: Harcourt A.H. & de Waal F.B.M.), Oxford Science Publications, Oxford. Pp 29–59.

Chaves-Campos J. & DeWoody J.A. 2008. The spatial distribution of avian relatives: do obligate army-ant-following birds roost and feed near family members? Mol. Ecol. 17, 2963–2974.

Cohen J. 1988. Statistical power analysis for the behavioural sciences. Lawrence Erlbaum Associates, Hillsdale, USA

Connor R.C., Mann J., Tyack P.L. & Whitehead H. 1998. Social evolution in toothed whales.

Trends Ecol. Evol. 13, 228–232.

Conradt L. & Roper T.J. 2003. Group decision-making in animals. Nature 421, 155–158.

Coolen I., Giraldeau L.-A. & Lavoie M. 2001. Head position as an indicator of producer and scrounger tactics in a ground-feeding bird. Anim. Behav. 61, 895–903.

Coolen I. & Giraldeau L.-A. 2003. Incompatibility between antipredatory vigilance and scrounger tactic in nutmeg mannikins, Lonchura punctulata. Anim. Behav. 66, 657–

664.

Corner L.A.L, Pfeiffer D.U. & Morris R.S. 2003. Social-network analysis of mycobacterium bovis transmission among captive brushtail possums (Trichosurus vulpecula). Prev.

Vet. Med. 59, 147–167.

Coultier S., Beuagrand J.P. & Lague P.C. 1996. The role of individual differences and patterns of resolution in the formation of dominance orders in domestic hen triads.

Behav. Process. 38, 227–239.

Creel S.R. & Waser P.M. 1994. Inclusive fitness and reproductive strategies in dwarf mongooses. Behav. Ecol. 5, 339–348.

Croft D.P., Krause J. & James R. 2004. Social networks in the guppy (Poecilia reticulata). P.

Roy. Soc. Lond. B Bio. 271, 516–519.

Croft D.P., James R., Ward A.J.W., Botham M.S., Mawdsley D. & Krause J. 2005.

Assortative interactions and social networks in fish. Oecologia 143, 211–219.

Croft D.P., James R., Thomas P.O.R, Hathaway C., Mawdsley D., Laland K.N. & Krause J.

2006. Social structure and co-operative interactions in a wild population of guppies (Poecilia reticulata). Behav. Ecol. Sociobiol. 59,644–650.

Croft D.P., James R. & Krause J. 2008. Exploring Animal Social Networks. Princeton University Press, Princeton.

Csardi G. & Nepusz, T. 2006. The igraph software package for complex network research.

InterJournal: Complex Systems, p. 1695.

Csilléry K., Johnson T., Beraldi D., Clutton-Brock T., Coltman D., Hansson B., Spong G. &

Pemberton J.M. 2006. Performance of marker-based relatedness estimators in natural populations of outbred vertebrates. Genetics 173, 2091–2101.

Danchin É., Cézilly F. & Giraldeau L.-A. 2008. Fundamental concepts in behavioural ecology. In: Behavioural Ecology (Eds: Danchin É., Giraldeau L.-A. & Cézilly F.), Oxford Univeristy Press, New York, USA. Pp. 29-53.

Dawkins R. 1976. The Selfish Gene. Oxford University Press, Oxford.

Dawson M. N., Raskoff K. A. & Jacobs D. K. 1998. Field preservation of marine invertebrate tissue for DNA analyses. Mol. Mar. Biol. Biotechnol. 7, 145–152.

Double M. C., Dawson D., Burke T. & Cockburn A., 1997. Finding the fathers in the least faithful bird: a microsatellite-based genotyping system for the superb fairy-wren, Malurus cyaneus. Mol. Ecol. 6, 691–693.

Dugatkin L.A. 2001. Bystander effects and the structure of dominance hierarchies. Behav.

Ecol. 3, 348–352.

Dunford C. 1977. Kin selection for ground squirrel alarm calls. Am. Nat. 58, 782–785.

Edgington E. S. 1995. Randomization Tests. Marcel Dekker, Inc., New York.

Ekman J. 1989. Ecology of non-breeding social systems of Parus. Wilson Bull. 101, 263–288.

Ekman J., Sklepkovych B. & Tegelstrom H. 1994. Offspring retention in the Siberian jay (Perisoreus infaustus): the prolonged brood care hypothesis. Behav. Ecol. 5, 245–253.

Ekman J., Bylin A. & Tegelström H. 2000: Parental nepotism enhances survival of retained

Elgar M.A. 1989. Predator vigilance and group size in mammals and birds: a critical review of the empirical evidence. Biol. Rev. 64, 13–33.

Elgar M.A. & Caterall C.P. 1982. Flock size and feeding efficiency in house sparrows. Emu 82, 109–111.

Ensminger A.L. & Meikle D.B. 2005. Effects of male kinship and agonistic behaviour on reproduction and odour preferences of female house mice, Mus domesticus. Anim.

Behav. 69, 1147–1155.

Faraway J. J. 2006. Extending Linear Models with R: Generalized Linear, Mixed Effects and Nonparametric Regression Models. Chapman & Hall/CRC, Boca Raton, FL.

Flack J.C., de Waal F.B.M. & Krakauer D.C. 2005. Social structure, robustness, and policing cost in a cognitively sophisticated species. Am. Nat. 165, E126–E139.

Flack J.C., Girvan M., de Waal F.B.M. & Krakauer D.C. 2006. Policing stabilizes construction of social niches in primates. Nature 439, 426–429.

Fleischer R.C. 1983. A comparison of theoretical and electrophoretic assessments of genetic structure in populations of the house sparrow (Passer domesticus). Evolution 37, 1001–1009.

Fleischer R.C., Lowther P.E. & Johnston R.F. 1984. Natal dispersal in house sparrows:

possible causes and consequences. J. Field Ornithol. 55, 444–456.

Fletcher J.A. & Doebeli M. 2006. How altruism evolves: assortment and synergy. J. Evol.

Biol. 19, 1389–1393.

Fletcher J.A., Zwick M., Doebeli M. & Wilson D.S. 2006. What’s wrong with inclusive fitness? Trends Ecol. Evol. 21, 597–598.

Fletcher J. A. & Doebeli M. 2009. A simple and general explanation for the evolution of altruism. P. Roy. Soc. Lond. B Bio. 276, 13–19.

Foerster K., Valcu M., Johnsen A. & Kempenærs B. 2006. A spatial genetic structure and effects of relatedness on mate choice in a wild bird population. Mol. Ecol. 15, 4555–

4567.

Foster K.R., Wenseleers T. & Ratnieks F.L.W. 2006a. Kin selection is the key to altruism.

Trends Ecol. Evol. 21, 57–60.

Foster K.R., Wenseleers T., Ratnieks F.L.W. & Queller D.C. 2006b. There is nothing wrong with inclusive fitness. Trends Ecol. Evol. 21, 599–600.

Frank S.A. 1986a. Hierarchical selection theory and sex ratios. I. General solutions for structured populations. Theoret. Popul. Biol. 29, 312–342.

Frank S.A. 1998. Foundations of social evolution. Princeton University Press, Princetown, NJ.

Fryday S.L. & Greig-Smith P.W. 1994. The effects of social learning on the food choice of the house sparrow (Passer domesticus). Behavior 128, 281–300.

Garamszegi L. Z. 2006. Comparing effect sizes across variables: generalization without the need for Bonferroni correction. Behav. Ecol. 17, 682–687.

Gardner A., West S.A. & Barton N.H. 2007. The relation between multilocus population genetics and social evolution theory. Am. Nat. 169, 207–226.

Giraldeau L.-A. & Caraco T. 2000. Social Foraging Theory. Princeton University Press, Princeton.

Giraudoux P. 2006. ‘pgirmess’: Miscellaneous functions for analysis and displays of ecological and spatial data. R package version 1.4.0. URL http://perso.orange.fr/giraudoux/

Godfrey S.S., Bull C.M., James R. & Murray K. 2009. Network structure and parasite transmission in a group living lizard, the gidgee skink, Egernia stokesii. Behav. Ecol.

Sociobiol. 63, 1045–1056.

Goldberg T.L. & Wrangham R.W. 1997. Genetic correlates of social behaviour in wild chimpanzees: evidence from mitochondrial DNA. Anim. Behav. 54, 559–570.

Goudet J. 1995. Fstat version 1.2: a computer program to calculate Fstatistics. J Hered. 86, 485–486.

Goudet J., Perrin N. & Waser P. 2002. Tests for sex-biased dispersal using bi-parentally inherited genetic markers. Mol. Ecol. 11, 1103–1114.

Gould R.V. & Fernandez R.M. 1989. Structures of mediation: a formal approach to brokerage in transaction networks. Sociol. Method. 19, 89–126.

Gowans S., Whitehead H. & Hooker S. K. 2001. Social organization in northern bottlenose whales, Hyperoodon ampullatus: not driven by deep-water foraging? Anim. Behav.

62, 369–377.

Grafen A. 1984. Natural selection, kin selection and group selection. In: Behavioural Ecology: An Evolutionary Approach (Eds: Krebs J.R. & Davies N.B.), Blackwell Scientific Publications, Oxford, UK. Pp. 62–84.

Grafen A. 2006. Optimisation of inclusive fitness. J. Theor. Biol. 238, 541–563.

Grafen A. & Hails R. 2002. Modern statistics for the life sciences. Oxford University Press, New York.

Griffin A.S., West S.A. & Buckling A. 2004. Cooperation and competition in pathogenic bacteria. Nature 430, 1024-1027.

Griffith S.C., Stewart I.R.K., Dawson D.A., Owens I.P.F. & Burke T. 1999. Contrasting levels of extra-pair paternity in mainland and island populations of the house sparrow (Passer domesticus): is there an ‘island effect’? Biol J Linn Soc 68, 303–316.

Griffith S.C., Dawson D.A., Jensen H., Ockendon N., Greig C., Neumann K. & Burke T.

2007. Fourteen polymorphic microsatellite loci characterized in the house sparrow Passer domesticus (Passeridae, Aves). Mol. Ecol. Notes 7, 333–336.

Ha R.R., Bentzen P., Marsh J. & Ha J.C. 2003. Kinship and association in social foraging Northwestern Crows (Corvus caurinus). Bird Behavior 15, 65–75.

Hamilton W.D. 1964. The genetical evolution of social behaviour. I & II. J. Theor. Biol. 7, 1-52.

Hamilton W.D. 1970. Selfish and spiteful behaviour in an evolutionary model. Nature 228, 1218–1220.

Hamilton W.D. 1975. Innate social aptitudes of man: an approach from evolutionary genetics.

In: Biosocial Anthropology (Ed: Fox R.), Wiley, New York. Pp. 133–155.

Hamilton W.D. 1979. Wingless and fighting males in figwasps and other insects. In:

Reproductive Competition and Sexual Selection in Insects (Eds: Blum M.S. & Blum N.A.), Academic Press, New York. Pp. 167–220.

Hatch K.K. & Lefebvre L. 1997. Does father know best? Social learning from kin and non-kin in juvenile ringdoves. Behav. Process. 41, 1–10.

Hein W.K., Westneat D.F. & Poston J.P. 2003. Sex of opponent influences response to a potential status signal in house sparrows. Anim. Behav. 65, 1211–1221.

Hemelrijk C.K. 1990a. Models of, and tests for, reciprocity, unidirectionality and other social interaction patterns at a group level. Anim. Behav. 39, 1013–1029.

Hemelrijk C.K. 1990b. A matrix partial correlation test used in investigations of reciprocity and other social interaction patterns at group level. J. Theor. Biol. 143, 405–420.

Hokit G.D. & Blaustein A.R. 1997. The effects of kinship on interactions between tadpoles of Rana cascadae. Ecology 78, 1722–1735.

Holmes W.G. 1986. Kin recognition by phenotype matching in female Belding's ground squirrels. Anim. Behav. 34, 38–47.

Hothorn T., Hornik K., van de Wiel M. A. & Zeileis A. 2008. Implementing a Class of Permutation Tests: The coin Package. J. Stat. Soft. 28, 1–23.

James R., Croft D.P. & Krause J. 2009. Potential banana skins in animal social network analysis. Behav. Ecol. Sociobiol. 63, 989–997.

Jansen V.A.A. & van Baalen M. 2006. Altruism through beard chromodynamics. Nature 440, 663–666.

Jawor J.M. 2000. Female dominance and aggressive behaviors in house sparrow flocks. Auk 117, 799–802.

Jensen H., Sæther B.-E., Ringsby T.H., Tufto J., Griffith S.C. & Ellegren H. 2003. Sexual variation in heritability and genetic correlations of morphological traits in house sparrow (Passer domesticus). J. Evolution. Biol. 16, 1296–1307.

Jensen H., Bremset E.M., Ringsby T.H. & Saether B.E. 2007. Multilocus heterozygosity and inbreeding depression in an insular house sparrow metapopulation. Mol. Ecol. 16, 4066–4078.

Johnson C.A., Giraldeau L.-A. & Grant J.W.A. 2001. The effect of handling time on interference among house sparrows foraging at different patch densities. Behaviour 138, 597–614.

Junker B.H. & Schreiber F. 2008. Analysis of biological networks. John Wiley & Sons, Inc., Hoboke, NJ.

Kalinowski S.T., Wagner A.P. & Taper M.L. 2006. ML-Relate: a computer program for maximum likelihood estimation of relatedness and relationship. Mol. Ecol. Notes 6, 576–579.

Katsnelson E., Motro U., Feldman M.W. & Lotem A. 2008. Early experience affects producer-scrounger foraging tendencies in the house sparrow. Anim. Behav. 75, 1465–1472.

Kokko H., Johnstone R.A. & Clutton-Brock, T.H. 2001. The evolution of cooperative breeding through group augmentation. P.Roy. Soc. Lond. B Bio. 268, 187–196.

Komdeur J. 1994. The effect of kinship on helping in the cooperative breeding Seychelles warbler (Acrocephalus sechellensis). P. Roy. Soc. B Bio. 256, 47–52.

Komdeur J. & Hatchwell B.J. 1999. Kin recognition: function and mechanism in avian societies. Trends Ecol. Evol. 14, 237–241.

Komdeur J., Richardson D.S. & Burke T. 2004. Experimental evidence that kin discrimination in the Seychelles warbler is based on association and not on genetic relatedness. P. Roy. Soc. B Bio. 271, 963–969.

Krakauer A.H. 2005. Kin selection and cooperative courtship in wild turkeys. Nature 434, 69–

Krause J. & Ruxton G.D. 2002. Living in Groups. Oxford University Press, Oxford.

Krause J., Croft D.P. & James R. 2007. Social network theory in the behavioural sciences:

potential applications. Behav. Ecol. Sociobiol. 62, 15–27.

Krause J., Lusseau D. & James R. 2009. Animal social networks: an introduction. Behav.

Ecol. Sociobiol. 63, 967–973.

Lebigre C., Alatalo R.V., Forss H.E. & Siitari H. 2008. Low levels of relatedness on black grouse leks despite male philopatry. Mol. Ecol. 20, 4512–4521.

Lehmann L. & Keller L. 2006. The evolution of cooperation and altruism. A general framework and classification of models. J. Evol. Biol. 19, 1365–1725.

Lehmann L., Keller L., West S.A. & Roze D. 2007. Group selection and kin selection: two concepts but one process. P. Natl. Acad. Sci. 104, 6736–6739.

Lendvai Á.Z., Barta Z., Liker A. & Bókony V. 2004. The effect of energy reserves on social foraging: hungry sparrows scrounge more. P. Roy. Soc. B Bio. 271, 2467–2472.

Lendvai Á.Z., Liker A. & Barta Z. 2006. The effects of energy reserves and dominance on the use of social-foraging strategies in the house sparrow. Anim. Behav. 72, 747–752.

Liker A. & Barta Z. 2001. Male badge size predicts dominance against females in house sparrows. Condor 103, 151–157.

Liker A. & Barta Z. 2002. The effects of dominance on social foraging tactic use in house sparrows. Behaviour 139, 1061–1076.

Liker A. & Bókony V. 2009. Larger groups are more successful in innovative problem solving in house sparrows. P. Natl. Acad. Sci. 106, 7893–7898.

Lukas D., Reynolds V., Boesch C. & Vigilant L. 2005. To what extent does living in a group mean living with kin? Mol. Ecol. 14, 2181–2196.

Lusseau D. 2003. The emergent properties of a dolphin social network. P. Roy. Soc. B Bio.

270, 186–188.

Lusseau D. 2007. Evidence for social role in a dolphin social network. Evol. Ecol. 21, 357–

366.

Lusseau D. & Newman M.E.J. 2004. Identifying the role that animals play in their social networks. P. Roy. Soc. B Bio. 271, 477–481.

Mantel N. 1967. The detection of disease clustering and a generalized regression approach.

Cancer Res. 27, 209–220.

Maynard Smith J. 1964. Group selection and kin selection. Nature 201, 1145–1147.

Maynard Smith J. 1976. Group selection. Q. Rev. Biol. 51, 277–283.

Meyers L.A., Pourbohloul B., Newman M.E.J., Skowroski D.M. & Brunham R.C. 2005.

Network theory and SARS: predicting outbreak diversity. J. Theor. Biol. 232, 71–81.

Milligan B.G. 2003. Maximum-likelihood estimation of relatedness. Genetics 163, 1153–

1167.

Mitani J.C., Merrywether D.A. & Zhang C. 2000. Male affiliation, cooperation and kinship in wild chimpanzees. Anim. Behav. 59, 885–893.

Møller A.P. 1987. Variation in badge size in male house sparrows, Passer domesticus:

evidence for status signalling. Anim. Behav. 35, 1637–1644.

Mottley K. & Giraldeau L.-A. 2000. Experimental evidence that group foragers can converge on predicted producer-scrounger equilibria. Anim. Behav. 60, 341–350.

Nakagawa S. 2004. A farewell to Bonferroni: the problems of low statistical power and publication bias. Behav. Ecol. 15, 1044–1045.

Nakagawa S., Ockendon N., Gillespie D.O.S., Hatchwell B.J. & Burke T. 2007. Assessing the function of house sparrows’ bib size using a flexible meta-analysis method. Behav.

Ecol. 18, 831–840.

Neumann K. & Wetton K. 1996. Highly polimorfic microsatellites in the house sparrow, Passer domesticus. Mol. Ecol. 5, 307–309.

Nowak M.A. & Sigmund K. 1998. Evolution of indirect reciprocity by image scoring. Nature 393, 573–577.

Ohtsuki H., Hauert C., Lieberman E. & Nowak M.A. 2006. A simple rule for the evolution of cooperation on graphs and social networks. Nature 441, 502–505.

Parker P.G., Waite T.A., Heinrich B. & Marzluff J.M. 1994. Do common ravens share ephemeral food resources with kin? DNA fingerprinting evidence. Anim. Behav. 48, 1085–1093.

Parker P.G., Waite T.A. & Decker M.D. 1995. Kinship and association in communally roosting black vultures. Anim. Behav. 49, 395–401.

Parsons K.M., Durban J.W., Claridge D.E., Balcomb K.C., Noble L.R. & Thompson P.M.

2003. Kinship as a basis for alliance formation between male bottlenose dolphins, Tursiops truncatus, in the Bahamas. Anim. Behav. 66, 185–194.

Perrins C. 1998. The Complete Birds of the Western Palearctic on CD-ROM, Version 1.

Oxford University Press, Oxford.

Petrie M., Krupa A. & Burke T. 1999. Peacocks lek with relatives even in the absence of social and environmental cues. Nature 401, 155–157.

Pinheiro J.C. & Bates D.M. 2000. Mixed-effects models in S and S-Plus. Springer-Verlag, New York.

Pravosudova E.V., Grubb T.C.Jr. & Parker P.G. 2001. The influence of kinship on nutritional condition and aggression levels in winter social groups of tufted titmice. Condor 103, 821–828.

Queller D.C. 1992. Quantitative genetics, inclusive fitness, and group selection. Am. Nat.

139, 540–558.

Queller D.C. 1994. Genetic relatedness in viscous populations. Evol. Ecol. 8, 70–73.

Queller D.C. 2004. Kinship is relative. Nature 430, 975–976.

Queller D.C. & Strassmann J.E. 1998. Kin selection and social insects. Bioscience 48, 165–

175.

R Development Core Team 2008. R: A language and environment for statistical computing, reference index version 2.8.1. R Foundation for Statistical Computing, Vienna, Austria. ISBN 3-900051-07-0, URL http://www.R-project.org

Ramos-Fernández G., Boyer D., Aureli F. & Vick L.G. 2009. Association networks in spider monkeys (Ateles geoffroyi). Behav. Ecol. Sociobiol. 63, 999–1013.

Reeve H.K, Westneat D.F, Noon W.A., Sherman P.W. & Aquadro C.F. 1990. DNA

‘fingerprinting’ reveals high levels of inbreeding in colonies of the eusocial naked mole-rat. P. Natl. Acad. Sci. 87, 2496–2500.

Reyer H-U. 1980. Flexible helper structure as an ecological adaptation in the Pied Kingfisher (Ceryle rudis rudis L.). Behav. Ecol. Sociobiol. 6, 219–227.

Roberts G. 1998. Competitive altruism: from reciprocity to the handicap principle. P. Roy.

Soc. Lond. B Bio. 265, 427–431

Rossiter S. J., Jones G., Ransome R. D. & Barratt E.M. 2002. Relatedness structure and kin-biased foraging in the greater horseshoe bat (Rhinolophus ferrumequinum). Behav.

Ecol. Sociobiol. 51, 510–518.

Russell A.F. & Hatchwell B.J. 2001. Experimental evidence for kin-biased helping in a cooperatively breeding vertebrate. P. Roy. Soc. Lond. B Bio. 268, 2169–2174.

Ryder T.B., McDonald D.B., Blake J.G., Parker P.G. & Loiselle B.A. 2008. Social networks in the lek-mating wire-tailed manakin (Pipra filicauda). P. Roy. Soc. Lond. B Bio.

275, 1367–1374.

Sachs J.L., Mueller U.G., Wilcox T.P. & Bull J.J. 2004. The evolution of cooperation. Q.

Rev. Biol. 79, 135–160.

Scheid C., Range F. & Bugnyar, T. 2007. When, what, and whom to watch? Quantifying attention in ravens (Corvus corax) and jackdaws (Corvus monedula). J. Comp.

Physiol. 121, 380–386.

Schwab C., Bugnyar T., Schloegl C. & Kotrschal K. 2008. Enhanced social learning between siblings in common ravens, Corvus corax. Anim. Behav. 75, 501–508.

Sharp S. P., McGowan A., Wood M.J. & Hatchwell B.J. 2005. Learned kin recognition cues in a social bird. Nature 434, 1127–1130.

Shorey L., Piertney S., Stone J. & Höglund J. 2000. Fine-scale genetic structuring on Manacus manacus leks. Nature 408, 352–353.

Sih A., Hanser S.F. & McHugh K.A.. 2009. Social network theory: new insights and issues for behavioral ecologists. Behav. Ecol. Sociobiol. 63, 975–988.

Silk J.B. 1982. Altruism among female Macaca radiata: explanations and analysis of patterns of grooming and coalition formation. Behaviour 79, 162–188.

Silk J.B. 2002. The form and function of reconciliation in primates. Annu. Rev. Anthropol.

31, 21–44.

Sklepkovych B. 1997. The influence of kinship on foraging competition in Siberian jays.

Behav. Ecol. Sociobiol. 40, 287–296.

Smith V.A., King A.P. & West M.J. 2002. The context of social learning: association patterns in a captive flock of brown-headed cowbirds. Anim. Behav. 63, 23–35.

Sokal R.R. & Rohlf F.J. 1995. Biometry: The Principles and Practice of Statistics in Biological Research. Freeman, New York.

Stamps J., Kus B., Clark A. & Arrowood P. 1990. Social relationships of fledging budgerigars, Melopsitticus undulatus. Anim. Behav. 40, 688–700.

Stöwe M., Bugnyar T., Loretto M.-C., Schloegl C., Range F. & Kotrschal K. 2006. Novel object exploration in ravens (Corvus corax): Effects of social relationships. Behav.

Process. 73, 68–75.

Summers-Smith J.D. 1963. The House Sparrow. W Collins & Sons, London.

Sundaresan S.R., Fischhoff I.R., Dushoff J. & Rubenstein D.I. 2007. Network metrics reveal differences in social organization between two fission-fusion species, Grevy’s zebra and onager. Oecologia 151, 140–149.

Szulkin M. & Sheldon B.C. 2008. Dispersal as a means of inbreeding avoidance in a wild bird population. P. Roy. Soc. Lond. B Bio. 275, 703–711.

Taillon J. & Côté S.D. 2007. Social rank and winter forage quality affect aggressiveness in

Taylor P.D. 1990. Allele-frequency change in a class structured population. Am. Nat. 135, 95–106.

Taylor P.D. 1992a. Altruism in viscous population – an inclusive fitness model. Evol. Ecol. 6, 352–356.

Taylor P.D. 1992b. Inclusive fitness in a homogeneous environment. P. Roy. Soc. Lond. B Bio. 249, 299–302.

Taylor P.D., Wild G. & Gardner A. 2007. Direct fitness or inclusive fitness: how shall we model kin selection. J. Evol. Biol. 20, 296–304.

Traulsen A. & Nowak M. 2006. Evolution of cooperation by multilevel selection. P. Natl.

Acad. Sci. 103, 10952–10955.

Treisman M. 1977. The evolutionary restriction of aggression within a species: A game theory analysis. J. Math. Psychol. 16, 167–203.

Trivers R.L. 1971. The evolution of reciprocal altruism. Q. Rev. Biol. 46, 35–57.

Trivers R.L. 1985. Social Evolution. Benjamin/Cummings, Menlo Park, CA.

Turner E.R.A. 1964. Social feeding in birds. Behaviour 24, 1–46.

Vehrencamp S.L. 1983. A model for the evolution of despotic versus egalitarian societies.

Anim Behav 31, 667–682.

Verbeek N.A. & Butler R.W. 1999. Northwestern Crow (Corvus caurinus). In: The Birds of North America Online (Ed: Poole A.), Cornell Lab of Ornithology, Ithaca. URL:

http://bna.birds.cornell.edu/bna/species/407

de Vries H. 1998. Finding a dominance order most consistent with a linear hierarchy: a new procedure and review. Anim. Behav. 55, 827–843.

de Waal F.B.M. 1989. Food sharing and reciprocal obligations among chimpanzees. J. Hum.

Evol. 18, 433–459.

Walls S.C. & Roudebush R.E. 1991. Reduced aggression toward siblings as evidence of kin recognition in cannibalistic salamanders. Am. Nat. 138, 1027–1038.

Ward A.J.W. & Hart P.J.B. 2003. The effects of kin and familiarity on interactions between fish. Fish Fisheries 4, 348–358.

Watts D.J. & Strogatz S.H. 1998. Collective dynamics of ‘small-world’ networks. Nature 393, 440–442.

Weiss B.M. & Kotrschal K. 2004. Effects of passive social support in juvenile greylag geese (Anser anser): A study from fledging to adulthood. Ethology 110, 429–444.

West S.A., Murray M.G., Machado C.A., Griffin A.S. & Herre E.A. 2001. Testing Hamilton’s

West S.A., Pen I. & Griffin A.S. 2002. Cooperation and competition between relatives.

Science 296, 72–75.

West S.A., Gardner A. & Griffin A.S. 2006. Quick guide: Altrusim. Curr. Biol. 16, 482–483.

West S.A., Griffin A.S. & Gradner A. 2007. Social semantics: altruism, cooperation, mutualism, strong reciprocity and group selection. J. Evol. Biol. 20, 415–432.

West SA, Griffin A.S. & Gardner A. 2008. Social semantics: how useful has group selection been? J. Evol. Biol. 21, 374–385.

Wey T., Blumstein D.T., Shen W. & Jordán F. 2008. Social network analysis of animal behaviour: a promising tool for the study of sociality. Anim. Behav. 75, 333–344.

Whitehead H. 2007. Socprog 2.3: programs for analysing social structure. Dalhousie University, Halifax.

Whitehead H. & Connor R. 2005. Alliances I. How large should alliances be? Anim. Behav.

69, 117–126.

Whitehead H. & Dufault S. 1999. Techniques for analyzing vertebrate social structure using identified individuals: review and recommendations. Adv. Study Behav. 28, 33–74.

Whitehead H. & Dufault S. 1999. Techniques for analyzing vertebrate social structure using identified individuals: review and recommendations. Adv. Study Behav. 28, 33–74.