[Balthazart J., Hirschberg D. (1979). Testosterone metabolism and sexual behavior in the chick. Horm. Behav., 12: 253-263.]Search in Google Scholar
[Bilcik B., Estevez I. (2005). Impact of male-male competition and morphological traits on mating strategies and reproductive success in broiler breeders. Appl. Anim. Behav. Sci., 92: 307-323.]Search in Google Scholar
[Bilcik B., Estevez I., Russek - Cohen E. (2005). Reproductive success of broiler breeders in natural mating systems: The effect of male-male competition, sperm quality, and morphological characteristics. Poult. Sci., 84: 1453-1462.]Search in Google Scholar
[Brougher S.M., Estevez I., Ottinger M.A. (2005). Can testosterone and corticosterone predict the rate of display of male sexual behaviour, development of secondary sexual characters and fertility potential in primary broiler breeders? Brit. Poultry Sci., 46: 621-625.]Search in Google Scholar
[Chen K.L., Tsay S.M., Chiou P.W., Chen T.W., Weng B.C. (2009). Effects of caponization and testosterone implantation on immunity in male chickens. Poult. Sci., 88: 1832-1837.]Search in Google Scholar
[Chiasson R.B., Carr B.L. (1985). The effects of castration and/or methimazole feeding on the pituitary-response to temperature extremes by cockerels. Gen. Comp. Endocr., 60: 427-433.]Search in Google Scholar
[Denk A.G., Kempenaers B. (2006). Testosterone and testes size in mallards (Anas platyrhynchos). J. Ornithol., 147: 436-440.]Search in Google Scholar
[Forkman B., Corr S. (1996). Influence of size and asymmetry of sexual characters in the rooster and hen on the number of eggs laid. Appl. Anim. Behav. Sci., 49: 285-291.]Search in Google Scholar
[Garamszegi L.Z., Eens M., Hurtrez- Bousses S., Moller A.P. (2005). Testosterone, testes size, and mating success in birds:acomparative study. Horm. Behav., 47: 389-409.]Search in Google Scholar
[Johnsen T.S., Zuk M. (1996). Repeatability of mate choice in female red jungle fowl. Behav. Ecol., 7: 243-246.]Search in Google Scholar
[Kimball R.T., Ligon J.D., Merola - Zwartjes M. (1997). Testicular asymmetry and secondary sexual characters in red jungle fowl. Auk, 114: 221-228.]Search in Google Scholar
[Kondra P.A., Shoffner R.N. (1955). Heritability of some body measurements and reproductive characters in turkeys. Poult. Sci., 34: 1262-1267.]Search in Google Scholar
[Ligon J.D., Thornhill R., Zuk M., Johnson K. (1990). Male competition, ornamentation and the role of testosterone in sexual selection in red jungle fowl. Anim. Behav., 40: 367-373.]Search in Google Scholar
[Ligon J.D., Kimball R., Merola - Zwartjes M. (1998). Mate choice by female red jungle fowl: the issues of multiple ornaments and fluctuating asymmetry. Anim. Behav., 55: 41-50.]Search in Google Scholar
[Mc Gary S., Estevez I., Bakst M.R., Pollock D.L. (2002). Phenotypic traits as reliable indicators of fertility in male broiler breeders. Poult. Sci., 81: 102-111.]Search in Google Scholar
[Mc Gary S., Estevez I., Bakst M.R. (2003 a). Potential relationships between physical traits and male broiler breeder fertility. Poult. Sci., 82: 328-337.10.1093/ps/82.2.328]Search in Google Scholar
[Mc Gary S., Estevez I., Russek - Cohen E. (2003b). Reproductive and aggressive behavior in male broiler breeders with varying fertility levels. Appl. Anim. Behav. Sci., 82: 29-44.10.1016/S0168-1591(03)00038-8]Search in Google Scholar
[Møller A.P. (1990). Fluctuating asymmetry in male sexual ornaments may reliably reveal male quality. Anim. Behav., 40: 1185-1187.]Search in Google Scholar
[Møller A.P. (1994). Directional selection on directional asymmetry: testes size and secondary sexual characters in birds. Proc. R. Soc. Lond. B, 258: 147-151.]Search in Google Scholar
[Møller A.P., Erritzoe J. (1988). Badge, body and testes size in House Sparrows Passer domesticus. Ornis Scand., 19: 72-73.]Search in Google Scholar
[Møller A.P., Pomiankowski A. (1993). Why have birds got multiple sexual ornaments. Behav. Ecol. Sociobiol., 32: 167-176.]Search in Google Scholar
[Møller A.P., Swaddle J.P. (1997). Asymmetry, developmental stability, and evolution. Oxford University Press, New York, NY.]Search in Google Scholar
[Møller A.P., Kimball R.T., Erritzoe J. (1996). Sexual ornamentation, condition, and immune defense in the house sparrow Passer domesticus. Behav. Ecol. Sociobiol., 39: 317-322.]Search in Google Scholar
[Navara K.J., Anderson E.M., Edwards M.L. (2012). Comb size and color relate to sperm quality: a test of the phenotype-linked fertility hypothesis. Behav. Ecol., 23: 1036-1041.]Search in Google Scholar
[Pitcher T.E., Dunn P.O., Whittingham L.A. (2005). Sperm competition and the evolution of testes size in birds. J. Evolut. Biol., 18: 557-567.]Search in Google Scholar
[Pizzari T., Jensen P., Cornwallis C.K. (2004). Anovel test of the phenotype-linked fertility hypothesis reveals independent components of fertility. Proc. R. Soc. B Biol Sci., 271: 51-58.]Search in Google Scholar
[Prieto M.T., Campo J.L., Santiago - Moreno J. (2011). Relationship among fluctuating asymmetry, morphological traits, and sperm quality in layers. Poult. Sci., 90: 2845-54.]Search in Google Scholar
[Rintamaki P.T., Hoglund J., Karvonen E., Alatalo R.V., Bjorklund N., Lundberg A., Ratti O., Vouti J. (2000). Combs and sexual selection in black grouse (Tetrao tetrix). Behav. Ecol., 11: 465-471.]Search in Google Scholar
[Saino N., Møller A.P., Bolzern A.M. (1995). Testosterone effects on the immune system and parasite infestations in the barn swallow (Hirundo rustica): An experimental test of the immunocompetence hypothesis. Behav. Ecol., 6: 397-404.]Search in Google Scholar
[Uller T., Eklof J., Andersson S. (2005). Female egg investment in relation to male sexual traits and the potential for transgenerational effects in sexual selection. Behav. Ecol. Sociobiol., 57: 584-590.]Search in Google Scholar
[Vizcarra J.A., Kirby J.D., Kreider D.L. (2010). Testis development and gonadotropin secretion in broiler breeder males. Poult. Sci., 89: 328-334.]Search in Google Scholar
[Zuk M., Johnsen T.S., Maclarty T. (1995). Endocrine-immune interactions, ornaments and mate choice in red jungle fowl. Proc. R. Soc. B Biol. Sci., 260: 205-210.]Search in Google Scholar
[Zuk M., Thornhill R., Ligon J.D., Johnson K., Austad S., Ligon S.H., Thornhill N.W., Costin C. (1990). The role of male ornaments and courtship behavior in female mate choice of red jungle fowl. Am. Nat., 136: 459-473.]Search in Google Scholar
