Gunalan Shanmugan likes this technical article:
KEY POINTSBirds ‘reproductive cycle is controlled by changes in day length called as Photoperiod.Birds perceive this photoperiod in two ways:a) Through retinal of the eye to visual cortex and pituitary glandb) Through harderian gland (UVA specific light) which triggers reproductive systemBirds are not “stimulated” by the entire period of light, but rather by two important parts o ...
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June 30, 2020