Hi River,
I’m sorry to hear that she has had this reaction. She is upset and probably a bit mad that this was done. Sometimes they might clip the nails a little shorter than normal because of the cost and having it last longer for the client. She should be OK after a few days – these type tantrums rarely last long. Did you have her wings trimmed, too? This can also cause some behavior changes since they feel more vulnerable and dependent on you.
If you are only having nails trimmed each time, you might look into a bird grooming perch. These are helpful to keep the nails from being too sharp and can reduce the number of nail trims she might need. Most of the time a pet bird’s nails become too sharp more often than being too long. You would want the type perch that is made from a solid, rough material. Avoid anything with sand or grit in the description – they do not need to consume this as it can cause an impaction and loose sand or grit can injure her feet. A company called Sweet Feet & Beaks came out with some of the first grooming perches and can be found online. A grooming perch should be attached where the bird will use it to step to another perch or to reach food or water, but not attached up high where the bird will sleep on it or use as the primary perch.
As to the behavior, ignore it as much as possible or you can end up reinforcing her behavior. You can reassure her, but not when she is clamoring to get out. Wait until she is calm again and then take her out. You don’t want her to associate a tantrum with getting out of the cage.
Thank you for asking Lafeber,
Brenda