What does it mean when a bird keeps on trying to come into a house.?

it sounds stupid i know but theres this red ed bird and for the past 4 days it has been hitting itself of the windows of my house trying to get in, it may be lost i dont know but i was wondering if it ment something like spirit wise? i thought this could be an omen, the bird is quite agressive to get in and it might be hurting it self trying to get in!