Help! My Conure is turning into a vampire!

I have had little Chloe, my Crimson Bellied Conure, for about 3 and half months. She is 6 months old and is normally very sweet. However she has recently started biting frequently and Im not sure how to handle it...
Up until this point I have been mostly ignoring her biting, and if it gets really bad, I just set her down and walk away. I also praise her and give her treats when she uses her beak gently with me.

She frequently bites my neck because I have a few dark freckles there. It has escalated to the point where she will bite them off and START DRINKING MY BLOOD. In fact one time I didnt realize she had punctured my skin, and when I felt her gently tounging my neck I started praising her profusely for being gently with me. I was ofcourse horrified to realize that she was in fact lapping up the blood pouring out of my neck.

This I have tried to counter with wearing scarves/hats (she also loves biting my ears) as the biting initially seems affectionate/playful rather than aggressive, and Im guessing she just still doesnt understand that it hurts me...

I am hoping for clarification though, because there is a lot of conflicting advice about how to handle biting, especially when it comes to the idea of “punishment”, such as timeouts.
I understand the concept of ignoring unwanted behaviors and trying to replace them with wanted ones, but it seems like the biting is still being reinforced (probably because she likes the taste of my blood) I dont know how to communicate to her that biting isnt okay.

There are also scenarios where she gets randomly really aggressive, and Im not sure why. It seems territorial, but its also inconsistent. There are places around the house she really likes to perch, such as on top of the toilet paper dispenser in the bathroom. Sometimes if I go to get toilet paper while shes perched there, shes cute and fluffy and will fly onto my shoulder and gently nuzzle my face. Other times she will bite relentlessly, even flying onto my shoulder and biting my face when I withdraw my hand.

She sometimes will also bite aggressively when I try to get her off my shoulder or get her to step up. Its seems strange that she does because I have never let her biting get her what she wants, such as staying on my shoulder.
I either gently pull her off me (while she continues to consume my flesh) or I camly wrap her in a towel and pull her off.

My question is: how should I handle these different scenarios? What am I doing right and what am I doing wrong? Is giving her occasional timeouts a when she’s being aggressive necessary, or counter productive?

Thank you so much to anyone willing to take the time to read and respond! I love her dearly and just want to respond appropriately!

Douglas

for the time being keep her off your shoulder, she has to earn the right to be there

Whenever she puts any more pressure than you're happy with on you, say "no" in a calm but firm manner, then set her away from you either on the floor (if safe) or the back of a chair, just anywhere not on you and do so immediately so they associate the act of biting with being shunned. Completely ignore them for like, a minute or 2 then go right back to playing and fun. If they bite again, rinse and repeat. Just make sure you're consistent with it so the association gets drilled in

I think it really is persistence on your part. I got to a point where I stopped Syd coming on me at all and when he did any beak pressure was a no even when it didn't hurt. For me the really hard bite was too much for me to keep calm enough so I started stopping all nibbling. It hasn't stopped the occasional bite but for example when I get him up in the mornings he always goes on the attack as I try to open the door. Now I stand still and say no biting and he has learned to stay on his perch until I open the door and then he comes out onto my hand with no problem.

His behaviour is completely different on opening his day cage. That doesn't seem to bother him at all. I have a feeling that what works for some birds won't necessarily work for all. They are all individuals so I have taken the advice and worked around it until I get the outcome I need and somehow Syd and I are muddling along so far. Fingers crossed!

Drinking your blood wow. Sounds like he is pushing boundaries so you need to be firm. Use the above advice.

I did this by fluke but when mine was little and would nibble id tap his beak gently and say no in a firmer voice and then put him in the cage for time out. Now when i do it he just stops being naughty because he has associated it with meaning he is going in his cage for a time out.

Its a good training exersice if they pick it up and now i have a good boy and he knows he is doing something wrong but hes really well behaved anyway x

Likes the salt! Your fid is also starting to come out of the phase of being a baby, and testing the waters. This is usually when everyone says what on earth ever happened to my little feather ball? She used to lay in my hand and just play and suddenly now she is biting! It is in their nature to preen the one they love and you can only redirect the action to prevent it becoming a habit!
MonicMC’s thread is a good study..
http://www.parrotforums.com/training/57935-brainstorming-biting-parrots.html

Negative correction really isn’t the best way to go! Avoiding the action is the best!

Very good point by Fiboy, it is far better not to get bitten in the first place if you can avoid it. But if a bite does happen, associating it as a bad thing to do is the port of call