I hate it when I have to wash my car almost every week.
This time it left 2 yellow dots in the clear coat.

 

You can wet sand the damage and then polish and prime it back.

 

xixonmn I feel your pain. The birds near my workplace have serious cases of diarrhea. When I can't get my prime spot I end up parking underneath a tree, which almost always is bad news. As long as you clean it within 24 hours (I soak the spot and once everything is loose, wipe it off), it should be fine.

 

Yeah bro... Beside my work's parking lot is a farm. I have no choice but to park there. After 3 hours, I waked out side to check on the car and that sht was all over the car. I used quick detailer to clean it but it was too late.

I've never wet sand a car myself. I may bring it to a pro detailer to get it done and try to learn how they do it the right way...
Darn, I just got a full detail last month.

 

fine compound > anti-swirl > wax/polish > voila

 

Remove from the paint surface asap by using the least abrasive product first-

1. Use a chemical paint surface cleaner (Z-PC Fusion Dual Action Paint Cleaner)
2. Try to dissolve the surface/etched deposits trying one or more of the following;
a) Use a 2:1 or stronger solution of distilled water/distilled white vinegar (Acetic acid)
b) Try a 2:1 solution of distilled water/Isopropyl Alcohol (adjust ratio as required)
c) Or equal parts distilled water/distilled white vinegar/Isopropyl alcohol.
3. Clean the effected surface with Klasse All-In-One or Zaino Z-PC Fusion Dual Action Paint Cleaner
4. Use detailing clay to remove any `hard' surface granules
5. Use a machine polish (Optimum Polish or Optimum Compound) and a cutting (LC White, Orange or Yellow) foam pad (speed # 4- 5.0) to level the surface
6. For Ceramiclear or other hard clear coats substitute Menzerna for machine polish; PO 203 S - Power Finish
7. Use the least aggressive polish/foam pad first, if this doesn’t remove the problem step-up to a more aggressive polish / foam pad set-up
8. Wet-sand with 2000, 2500 or 3000 grit finishing paper

 

Some niche advice here, but NEVER park under a holly tree. Something about birds eating those berries takes the acidity way up. They crapped on my SUV and it quickly etched into the paint. I had to have the hood re-painted and have not parked near that tree every since.

If birds are a particular problem in your area, be sure to keep a good wax job on the vehicle. That seems to help.

 

This is why birds do so much damage to the paints surface and no matter what paint (inc CeramiClear) or paint protection you use (including nano tech) they cannot resist this acid attack, so remove and netrelize as soon as you can-

Bird excrement comprises; Ammonia and urine as white crystals of uric acid (pH 3.0 - 4.5) a small organic compound, which is produced by the breakdown of protein during digestion, and is excreted by reptiles and birds. Uric acid is also the end product of nitrogen catabolism in birds Ammonia is a mixture of nitrogen gas and hydrogen gas; with moisture as a catalyst it becomes Ammonium Hydroxide, which is caustic.

Heat and water act as a catalyst; a vehicle paint surface temperature of >90.oF creates a very aggressive reactivity of the Alkaline, Uric Acid and Ammonia. This will cause surface etching, so they should be removed without delay, at lower temperatures (> 40.oF or less) there’s no reactivity and therefore little or no etching.

Their main food source in summer is mostly insects and seeds, in the winter/ spring it’s berries, which are very acidic, and if left for any length of time the will cause the porous clear coat to occlude (a non-transparent ‘clouded’ area) or may cause etching (a depression in the paint or glass surfaces)
Birds use gravel to help digest their food, predatory birds (owls, hawks, etc hunt and kill mice and small animals, so ground light weight bone fragments, sand and grit are some of the major components, which can cause scratching.

 

Yup, if you leave the bird crap too long it will definitely damage your paint!

 

After the bird dropping are washed off, they have to be neutralized BEFORE doing any type of repair, whether it be refinishing or polishing. The easiest solution would be 1 tbsp. of baking soda, mixed in a squirt bottle with 1 quart of water. This alkaline mixture will neutralize the acid in the droppings. Then it can be buffed/refinished.