For the last week my 18 month old male emu El has not been letting anyone other than my husband near me. If anyone comes over El runs over to greet them and is perfectly friendly and happy until that person comes within 3 feet of me and then he puffs up all his feathers and tucks his chin in and grunts loudly while strutting back and forth at the new person. If one of us backs up a step he unpuffs and hugs me and is happy again. So is this behavior a breeding thing and he thinks I'm his woman or is this just a territory thing or what ?