The pigeon waterer with handle is sized not only for use with pigeons, but also as a drinking accessory for chicks and other medium-sized birds. 
The large opening allows the water level to be observed at all times, making it easy to calculate the time to refill the bottle so that there can be clean water at all times. 
3qt.: 11.5" tall & 6.5" diameter
1.5gal.: 13" tall & 7.5" diameter
2.5gal.: 17" tall & 9" diameter