Chicken prices are damn low

I used to buy chicken for 260rs/kg before my vacation (went to hometown for a month) but when I returned I see chicken price is at the bottom -120/kg for live one where 30 egg tray costs me 158rs only. I never seen this low in recent years in Bangalore.Is there any bird flu or religious week going in specific to make these prices so low.( I stay near channasandra)