Great tit fights and kills nest intruder

Don't watch if you want to continue believing small cute birds are small cute birds...
Bird #6 enters the nest while bird #1 is out. A fight breaks out and bird #1 kills the intruder.

[@Gobbler.]

goodness!!!

[@しーぼー-m6v]

シジュウカラ怒らすと怖い

[@SomeDuuude]

Brutal