a male common green forest lizard with red color head, in breeding season

red color head lizard male green forest calotes breeding season sitting top tree stem wild area sri lanka agamid headscales sharp spines dorsal scales crests adult males neck eye bright coloration stripes changeable throat dark orange stripe lizards colorful lankan animal nature macro reptile colors tropical skin wildlife spine beautiful trunk asia predator spiny background watching fauna natural environment creature ceylon looking spike common