peep
"Peep" is a palindrome often used to describe the sound of a baby bird.
a birds tweet in palindrome is peep
none
peep
peep
peep
peep
One could say that the worm is the opposite of the early bird, or one might say "night owl".
ITS A PALINDROME
You might be looking for the word civic.
repaper
"Beep beep" is a palindrome for the sound a horn might make because it reads the same forwards and backwards.