The aim of the study was determine the reproductive behavior of green peafowl with different ages. The research was conducted in October -December 2015 at UD. Tawang Arum, Tawangrejo Village, District Gemarang, Madiun. The parameter of the study were duration, frequency and sequence of the reproductive behavior of green peafowl. The result showed that reproductive behavior of 10 years male peafowl showed more reproductive behavior than other, as did the green peafowl females at aged 10 years old doing more reproductive behavior to form give responds to green peafowl males than others. Green peafowl activities was more used for perch and walk compared with their reproductive behavior. The conclusions from this research was there is a relation between age and reproductive behavior of green peafowl. Green peafowl males (10 years old) was more doing reproductive behavior than the younger other males (4 and 5 years old), it showed displaying as many as 2,5 times than the peafowl male of 4 years that only 2 times.