Complex sentence: When a predator is seen, is perches out of harm's way sitting on its haunches at a safe distance, and send alarming call with a flick of tail accomapanying each call, just as well known "Funambulus palmarum" does.
Split into simpler sentences: When a predator is seen, it perches out of harm's way, sitting on its haunches at a safe distance. It alarm calls with a flick of its tail accompanying each call, just as the well known "Funambulus palmarum" does.