I got bird crap on my 370Z right after I bought it and it did stain the clear coat. Either there was no wax at all on the car or the dealer used some junk wax. I was able to buff out the stain pretty easily with some Zaino Z5. Shortly thereafter I did the complete Zaino treatment and I now have 4 coats of Z2/ZFX on the car. I too keep a small spritzer-type bottle of quick detailer in my car with a small micro fiber towel. I got bird bombed again and it wiped right off with a few sprays of QD to soften it up first, and left no stain or etching.
Keep a good coat of your choice of a wax or sealer on the car, and keep an small emergency bottle of QD and a towel in your car so you can get it off the paint as soon as possible and you should be OK.

+1 and some disposable gloves and a ziplock just incase you can't wash your hands and nowhere to throw out the towel and gloves.

As soon as I purchased my 370 I took it to a hand car wash. As the guys were drying it I started noticing black marks on the silver paint. Everything was sticking to the car. Apparently the dealer didn't bother waxing the car. Actually when I picked up the car from the dealer I noticed black marks and had the salesman remove them with some of their own wax. After these 2 events I worked overtime to put wax on the car. In a weeks time after the purchase I put on 5 coats of wax. Since I bought the car at the end of June I have applied 30 coats of wax. And yes I have been keeping count. Wax and car cover are mandatory with these cars. 2morrow I will put on another 2 coats. I advise all of you to do it before it gets too cold.

I've been fortunate so far, no bird strikes yet.

autopia.com is some kind of Dental Products site....what is the full address, because it looks like there are a number of orgs, etc.

Sorry, type autopia.org in a google search and it's the first hit that comes up. Go to the "how to" at the top of the page. That's a good place to start.

try this autopia link!
Detailing Car Clay Bar - Auto Clay Bar for Car Paint Contamination

i found that the popular Meguiar's blue claybar is too firm for my Z's finish.
it almost looked like i lightly wetsanded the clear. there are aggressive clays
that do this intentionally, but i wasn't expecting it from their softer blue.

i have a random orbital so polished it all out so no issue, but still kinda surprised.

im going back to using my Griot's clay (which is super soft like mud) since my Z is
only driven on the weekends on nice days and rarely gets any contaminants stuck
on the finish.