References
- Burger , J.W. 1947 . On the relation of daylength to the phases of testicular involution and inactivity of the spermatogenic cycle of the starling . J. exp. Zool. , 105 : 259 – 268 .
- Dolnik , V.R. 1963 . A quantitative study of vernal testicular growth in several species of finches (Fringillidae) . Dokl. Akad. Nauk. S.S.R.R , 149 : 370 – 372 .
- Follett , B.K. and Robinson , J.E. 1980 . Photoperiod and gonadotrophin secretion in birds . Prog. reprod. Biol. , 5 : 39 – 61 .
- Follett , B.K. , Scanes , C.G. and Cunningham , F.J. 1972 . A radioimmunoassay for avian luteinizing hormone . J. Endocrinol , 52 : 359 – 378 .
- Hammer , W.M. 1968 . The photorefractory period of the house finch . Ecology , 49 : 211 – 227 .
- Koch , H.J. and De Bont , A.F. 1952 . Standard metabolic rate, weight changes and food consumption of Fringilla c. coelebs L. during sexual maturation . Ann. Soc. roy. Zool. Bel , 82 : 1 – 12 .
- Savigni , G. and Massa , R. 1983 . The migration of the chaffinch Fringil‐la coelebs to Italy . Riv. it. Ornitol , 53 : 3 – 14 .
- Sharp , P.J. 1984 . Seasonality and autonomous reproductive activity in birds . Boll. Zool. , 51 : 395 – 403 .
- Sharp , P.J. , Massa , R. , Bottoni , L. , Lucini , V. , Lea , R.W. , Dunn , I.C. and Trocchi , V. 1986 . Photoperiodic and endocrine control of seasonal breeding in Grey partridge (Perdix perdix) . J. Zool. (London) (A) , 209 : 187 – 200 .
- Silverin , B. 1984 . Annual gonadotropin and testosterone cycles in free‐living male birds . J. exp. Zool. , 232 : 581 – 587 .
- Turek , F.W. 1975 . The termination of the avian photorefractory period and the subsequent gonadal response . Gen. Comp. Endocr , 26 : 562 – 564 .
- Wolfson , A. 1966 . Environmental and neuroendocrine regulation of annual gonadal cycles and migratory behaviour in birds . Rec. Progr. Horm. Res , 22 : 177 – 244 .