Please help// What’s wrong with my budgie?

[Saloni2519]

 

[Saloni2519]

Hi there. Do you have any idea what this symptom is will be taking my bird to a vet just noticed this it’s very concerning yes she has laid eggs in the past. Eating normally everything else is normal. Want to have an idea of what this is. Ps. I blowed near her vent to make it clearer her feathers are normal.