What is love compared to in the following sentence: "with love's light wings did i o'erperch these walls"?

a wall
a perch
a bird
light

Love is compared to a bird in the following sentence: With love's light wings did I o'erperch these walls?
Love is like a bird in that it is light and it can fly over the walls to get to the other side.

The details about the statues, i believe, are that they're carved from blocks of igneous stone, many of them are partially buried under the ground which to preserve and protect them from the harsh environment on easter island, and many of the facial features have washed away. also, the most well-preserved one is at the british museum in london.these are just guesses from what i can see and what i think i read correctly. i'm sorry i couldn't be more .