Cages are such symbolic images when you think about them. Trapping birds to stop them being free or keeping them safe from what's outside? Depending on which way you look at you can feel quite differently about them.
I tend to think about them as trappings really. I can think of times when I've felt like that. Times when I've felt trapped in a way of being, perhaps in a relationship with others or in a workplace. When it's felt like my wings have been clipped, my freedom diminished, no apparent escape available to me at the time. It's not a pleasant feeling but one you can learn to live with, to put up with it, for a while at least.
You know when you've left the traps of that bird cage. You feel free, that you can fly where ever you want to go. You can speak as loudly as you want. You can be who you want to be. There's nothing like that sense of freedom,that ownership of space and landscape. It's such a contrast to the trapped feeling. Probably more vibrant and real though because of the caged experience.
Of course not everyone escapes the cage. Some stay trapped and it becomes the only way they know. Gradually perhaps make steps towards breaking out or finding small ways to break free while still within the confines of the cage. We might try to help sometimes but it could be that the cage also has some comfort and people need to be ready to leave it. Ready to face the world outside. It takes courage to do that.