When an uninvited invader penetrates the boundaries of a hive.

[Ben Framed]

I watched this 3 minute video and was thinking, some of my fellow, new beekeepers might be interested in this YouTube video.

Titled:  When a Yellow Jacket Enters a Hive

Phillip Hall "Ben Framed"

[Acebird]

When a yellow jacket enters a hive the hive is weak for some reason.

[beepro]

My bees just chase it out within 3 minutes!  We don't have that many YJ here.