Correct. Today is January 1. The day before yesterday, I was 21. Yesterday I was 22. At the end of this year, I'll be 23. Next year, 24.
I'm out, and you're up.
The "protected nest" status for them is BS, especially if you have a business (I do not, just feel for them.). Those bastards nest above the door, swoop everyone coming in, and you "can't knock them down."
Turn one on. Leave it on.
Leave one off.
Turn third one on for a while then shut it off.
When you open the door, two bulbs will be off, but one will be hot. Then, you know which switch controls which light.