Weird spots on one side of my 3 year old quakers wings and tail

[Sheepgobaa]

Today after I gave him a bath I noticed he had weird marks on one side of his feathers that I never noticed before.
For more context recently once I came back from a week long trip I also noticed he was overpreening the feathers under his neck.
I didn't think to much of it as I assumed it was just stress of me being gone, now I'm very worried that he may be ill what can I do?
There aren't any avian vets anywhere close to my town and I'm not aware of there even being any in my country.

 

[Greenhouseparrots]

That looks like stress marks to me. What's his diet like as they can be caused by nutritional difficulties. If his diet is fine then it might be the stress of you having gone away. It could also be him damaging his feathers by over preening, which would have been because you were gone for a bit.

 

[Sheepgobaa]

That looks like stress marks to me. What's his diet like as they can be caused by nutritional difficulties. If his diet is fine then it might be the stress of you having gone away. It could also be him damaging his feathers by over preening, which would have been because you were gone for a bit.

Thank you for responding
Currently im feeding him a mixed diet of seeds and pellets, he's eating more seeds then the pellets at the moment as im in the process of switching him to a more pellet based diet.
Most of the marks were gone once he fully dried off, there's was only a bit more left on his tail

 

[Greenhouseparrots]

Thank you for responding
Currently im feeding him a mixed diet of seeds and pellets, he's eating more seeds then the pellets at the moment as im in the process of switching him to a more pellet based diet.
Most of the marks were gone once he fully dried off, there's was only a bit more left on his tail

That's good news!

 

[Birdgirl24]

Thank you for responding
Currently im feeding him a mixed diet of seeds and pellets, he's eating more seeds then the pellets at the moment as im in the process of switching him to a more pellet based diet.
Most of the marks were gone once he fully dried off, there's was only a bit more left on his tail

Have you been able to get him to eat any veg?