Question

Answer to ivy is a plant. what does the bird want to convey by describing it as a wall?

Answer 1

Birds want to convey that ivy is more safe and better living place then anywhere .She can see the rising sun,hear the sound of the rainfall sitting and sleeping on it.

Answer 2

Ivy is a climber plant so it climbs upon the wall and covers it fully thus it looks like a wall and as it protects the bird from wind,rain and sun it also acts like a wall in a other way.