The field of animal care is one of the most controversial subjects in America today.  Hyperbolic passion and reaction to various treatments of animals is exceeded by only the field of abortion and reproductive rights.  Here is our current question:  Should the Center treat and release invasive species of animals, or should invasive species be euthanized because of the damage they do to native species?  For example, the mute swan is an invasive species (actually, a domestic species gone feral to the point of being an invasive species) that out-competes native ducks and wading birds.  Should we euthanize a swan when it comes to the Center?