Slang definitions & phrases for joy-stick Expand. noun. 1  The control lever of an airplane (1910+) 2  The steering wheel of a car, esp a hot rod (1950s+ Hot rodders) 3  The control lever for a computer or video game (1967+)  An opium pipe (1940s+ Narcotics)
Like that Hamsa separates the good things from the bad things, Water birds separate good water from the bad water. It has got a sieve like structure (lamellae) in its mouth which separates water from mud. Probably this is what lead to the belief that Swans can separate milk from water and drink only milk.
Mute swans tend to use the power of their wings to attack rather than their beaks. John Faaborg, a biologist at the University of Missouri and president of the American Ornithologists' Union, has known people who were hurt by geese attacks. And I am sure that swans can do major damage given that they are so big.