1. Aschoff, J., ed., Biological rhythms. Handbook of behavioral neurobiology, Vol 4 (New York: Plenum) 1981
2. Barott, H.G., Pringle, E.M. (1951) The effect of environment on growth and feed and water consumption of chicks. IV. The effect of light on early growth. J. Nutr. 45: 265–274.
3. Bartholomew, G.A. Jr. (1949) The effect of light intensity and daylength on reproduction on reproduction in the English sparrow. Bull. Mus. Comp. Zool. 101: 431–476.
4. Benoit, J. (1964) The role of the eye and of the hypothalamus in the photostimulation of gonads in the duck. Annals of the New York Academy of Science 117: 204–216.
5. Bentley, G.E., Goldsmith, A.R., Dawson, A., Briggs, C., Pemberton, M. (1998) Decreased light intensity alters the perception of day length by male European starlings (Sturnus vulgaris). J. Biol. Rhythms 13: 148–158. Bissonnette, T.H. (1931) Sexual periodicity. Quart. Rev. Biol. 11: 371–376.