I'm sooo glad you've taken an interest in butterflies.* I don't remember if you've ever mentioned the state you live in, but it would be easier to seek out info on which butterflies are in your area that way.** Zone 9 can get down to 20*F in winter, so I don't think you'll find much butterfly activity.* Have you seen butterflies in winter where you are?
That was so interesting about what prompts desert birds to start breeding.*
When weeding, the best way to make sure you are removing a weed and not a valuable plant is to pull on it. If it comes out of the ground easily, it is a valuable plant.