Goose with feather defect

[PaoloP]

A detail you've noticed, or what?

No, I wanted to provide material for a closer look and see if someone could include or exclude one of the possible reasons for feather loss.

 

[Goosebaby]

Here's another picture that I took today with the SLR. I don't know if it helps, but maybe one of you will recognize a detail. I also have more pictures.

It could be mites. If mites are the cause it can be treated with a single dose of ivermectin horse paste, dosage is 0.05 ml per pound.

Measuring the right amount might be tricky unless you happen to carry a scale around with you though. Normally it’s a bad idea to eyeball medication but in this case it will be fine, if you can catch them or sneak some of the paste into a treat aim for a smallish pea sized amount of the paste in the treat or smeared on the back of the tongue.