I used to like birds

I used to like birds and feel indifferent about slugs and the like.  I have a feeling all that will change in the coming weeks and months.  We had some visitors to our front garden beds:

And some slimier creatures near our back garden bed.

 

As you might imagine my browser history is filled with "how to detract birds" and "how to kill slugs without poisoning humans, pets, and wildlife."

I don't know how all this will play out, but I can say this.  Bring it my feathered friends and slimy suckers.  Bring it.

What is your favorite way to discourage unwanted visitors to your vegetable garden?