Heron

It's very inelegant is probably what you've heard

It is a heron; and some say it's quite an ugly bird
It stands within deep mud with only just one wish
To cruelly spear and eat; all the unsuspecting fish
It will raid our garden ponds when no one is about
But it fast takes to the air if you make a shout
And when it flies it opens up great, flapping wings
Looks half flamingo, half stork and it never sings
And don’t ever be deceived by its statuesque poise
Its beady eyes spot you; even if you don’t make a noise