Dr Darby was born in Manchester England. He attended Cambridge University School of Veterinary Medicine and graduated with honors in 1991. In 1992 he moved to Long Island, New York. He worked at 2 small animal hospitals. In 2003 Dr Darby passed the ABVP boards and became a board certified specialist in avian medicine. He is one of only approximately 100 veterinarians worldwide who have advanced knowledge and expertise in avian (bird) medicine. In 2005 Dr Darby began work at a specialty hospital on Long Island (The Center for Specialized Veterinary Care) as head of avian and exotic animal medicine.
In 2006 Dr Darby purchased Seneca Falls Veterinary Hospital in Seneca Falls. Since then he has worked hard to make Seneca Falls Veterinary Hospital a modern, state of the art Veterinary Hospital. He lives in Seneca Falls with his wife Denise, sons Christopher and Nicholas,3 dogs (Dibley, Daisy and Sophie), 2 cats (Oliver and Paddy) and 5 birds (Tony, Baby bird, Lilly, Scrooge and Marley).