After plenty of hours or even a whole day of hard work you want to come back to your home and have a peaceful rest of the day. Well this poor bird will have to sleep on some other place today because the intruder has occupied it’s home.
Yeah, that is little evil squirrel inside and it seems that it decided to spend some time there and it is ready to fight for that. But it better watch itself if that bird calls in some reinforcements 
