Tall bird cages are usually meant to be shared by several smaller
birds. They have multiple levels built into them, so that the birds
will have plenty of space to move and play. They are also more appropriate
for larger birds, such as parrots, because putting a bird in a cage
where it can’t even spread its wings is inhumane. Think about
spending 90% of your waking time inside a box were you could stand
upright, but couldn’t put your elbows out. It doesn’t
sound very fun does it?
So regardless of the type of birds you intend to keep,
it’s a good idea to have a cage that is several times the size
of the bird. In fact, the bigger their cage (within reason) the happier
they will be. Obviously there will be some limitations to this, if
you plan on keeping a very small species, such as chickadees, you
need to ensure that the bar spacing is tight enough to keep them from
leaving the cage and running amok in your house. But tall bird cages
are actually fairly good when it comes to bar spacing.
As mentioned before, a tall bird cage is likely to feature
several levels in it. When you are dealing with two or more birds,
this becomes important. Birds assert dominance by height. That’s
why you see pirates with a parrot on their shoulder. The bird is higher
than the person, and feels like it is dominant. When you have multiple
birds in the same cage, the dominant bird will take the highest level.
If there aren’t other levels available to the other birds, the
dominant one will chase them off its perch, leaving them stuck on
the cage floor.