This school has gone to the birds. A Nassau County high school teaches respect for nature in an incredibly unique way — by caring for several exotic animals like peacocks and a pack of furry friends that kids have fallen in love with. “We say that one trip to the dog is worth two to the counselor,” Brother Kenneth Hoagland, principal of Kellenberg Memorial High School, told The Post. “It really does create a good mental health environment for the students,” added the canine lover who lives on