Student or Learner
The baby pushed the bottle.
The bottle fell down and splashed all over the floor.
Jack saw this scene and tells his mother.
"The bottle has been pushed by the baby."
Is the answering colloquial?
No. I don't know what you mean. A baby can push a bottle but more context is required. Where was the bottle to start with? Where did it end up?
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.