Do you have any rope toys in your bird’s cage?
You could accidentally be putting your feathered family in danger without even realising! Many birds LOVE to chew and often will chew on rope if placed within their cage. When chewing on these fibres, most birds spit them out, but sometimes they will swallow them. Over time (or with large amounts), the synthetic fibre can build into a large knot, and cause an obstruction. Especially higher up in the gastrointestinal tract, like the crop, fibres tend not to degrade. Surgery is often the only solution.
To keep your bird safe stick to wooden, plastic, paper, cardboard and leather toys!