The variable valve is adjustable so that water can be released with the lightest touch. It is ideally suited for birds from finches on up to cockatiel sized birds.
3 oz Bird Butler(TM) has a 6" long and 1 in diameter tube. It can be used for single or very small pairs of finches, canaries, parrotlets, etc. It also makes a nice travel or show bottle!
See our FAQs for variable valve cleaning instructions.
The flow-rate of water from the valve can be adjusted by twisting the valve cap clockwise to decrease flow or counter-clockwise to increase the flow-rate.