How often should you change water in hummingbird?

You should change the water in your hummingbird feeder every 2 to 3 days, especially during warmer weather, to prevent mold and bacteria growth. In cooler temperatures, you can extend this to about once a week. Always ensure the feeder is clean when you refill it to promote the health of the hummingbirds. Regular maintenance is key for attracting and keeping them healthy.