by Pajarita » Tue May 22, 2018 10:34 am
Welcome to the forum! You must have a sex-linked mutation because that's the only way anybody can tell the gender of a 4 month old tiel without DNAing.
But, going to your question, no, a four month old bird should not be just sitting there, sleeping most of the time AND it SHOULD be scared of you. It should also not be eating sunflower seeds so, please, re-evaluate the diet you will be offering [they need whole grains and grass seeds and raw produce] and keep a very vigilant eye on her because, if what you describe is accurate, it's called lethargy and that's a symptom of disease.