If you are fond of watching wildlife, definitely include Nagarhole National Park in your list,
which requires a whole day's time to see.
Rollapadu in Andhra Pradesh, Nagarhole(Rajiv Gandhi National Park) and Bandipur National Park in Karnataka; Rajamalai(Eravikulam
National Park) and Periyar National Park in Kerala; Mudumalai National Park, Udhagamandalam, Indira Gandhi Wildlife Sanctuary in Anamalai, Vedanthangal and Point Calimere Wildlife and Bird Sanctuary in Kodikkarai, Tamil Nadu are notable bird watching locations in South India.