In birds, biological clock function pervades all aspects of biology, controlling daily changes
in sleep: wake, visual function, song, migratory patterns and orientation, as well as seasonal …

Day length‐dependent breeding in birds commonly occurs in spring and summer, but may
occur after exposure to complex changes in day length, as for example in transequatorial …

A clock is conceptualized as comprising an input-pacemaker-output system. An overtly
measured output, such as the rhythm of activity, feeding or secretion of melatonin, is the …

This paper reviews current knowledge of photoperiod control of GnRH-1 secretion and
proposes a model in which two processes act together to regulate GnRH1 secretion. Photo …

The rapid photoperiodic response in Japanese quail is so precise that it allows neural
analyses of how photoperiodic information is transduced into an endocrine response. After …

We investigated the temperature effects on hypothalamic transcription of genes involved in
the induction of photoperiodic response in redheaded buntings. Birds were exposed at 22 …

The effects of light wavelength on photoperiodic clock were determined in the migratory
male blackheaded bunting (Emberiza melanocephala). We constructed an action spectrum …

The present study was carried out on a Palearctic-Indian migratory species, the
blackheaded bunting (Emberiza melanocephala), to understand the importance of …

We investigated time course of photoperiodically driven transcriptional responses in
physiologically contrasting seasonal life-history states in migratory blackheaded buntings …

A long day response is triggered by the activation of EYA3 (eyes absent 3) and TSH-β
(thyroid stimulating hormone beta subunit) genes in the pars tuberalis (PT). However …