Fig. 1From: Temperature effect on luteinizing hormone secretion of Eurasian Skylark (Alauda arvensis) and Great Tit (Parus major) in ChinaThe plasma LH level (mean ± SD) of Eurasian Skylark (a) and Great Tit (b) during experimental exposure to a long photoperiod. X-axis is the number of treatment weekBack to article page