sheila - agressive Quaker problem
We purchase a quaker parrot about 3 weeks ago. she is 6. she did very well with ladies of the house on our shoulder non aggressive except around her feed. then about 2 days ago she is being very aggressive to all of us biting, screaming.
sitting on floor of cage head bobbing up and down with feathers fluffed. she is lifting her wings not flapping almost like she has a palsy. We are very concerned as are new to parrots. she has been treated very kindly and I followed you advice on being firm and saying no when biting and also time outs but to no avail. any info would be appreciated. thanks