How do I make the camera less sensitive. Birds flying by sets it off, rabbits hopping by the same.

Depending on the size and type of motion you want to trigger recording, it could be either/or per camera settings sensitivity or zones.

I use zones to block objects flying in the sky - unless you are interesting in recording alien space craft landing in your yard.

Make the sensitivity setting…less sensitive.
You’ll find the owner’ manual has more info here