No, most water birds have long legs for example the Heron, Black necked stilt and the Moorhen all have long legs.
yes they can
Flamingos and storks.
Egret is a long-legged, wading bird. It is related to a heron.
A Heron.
It will not eat seeds
roadrunner
heron
Crane
A wading bird is any of a group of long-legged birds, such as cranes, herons or storks, which wade in shallow water in search of food.
Ibis,long-legged wading bird which lives in warm and tropical regions
One who, or that which, wades., Any long-legged bird that wades in the water in search of food, especially any species of limicoline or grallatorial birds; -- called also wading bird. See Illust. g, under Aves.
avocet
There are many, including: Herons, ibis, cranes, sandpipers, stilt, avocet, flamingo, stork, limpkin.
You may be referring to the water bird called the common Loon.