Have you tried getting down to their level? I think they have instincts to be afraid of things from above. Mine were always freaky when I first tried to pick them up while standing above them. I searched forums and someone showed sitting with them really helped in taming, tried it and it worked for me.
Try going into their area and sitting on a stool, bucket or just on the floor/dirt. Take a handful of mealy worms and let them see you holding it. Scatter some rather close to you. and some remote for the scared ones. When they start coming closer, offer treats in your hand only. They should start to come to you and eat out of your hand. Once they do this, only offer treat in your hand. Some will likely try sitting on your legs and may peck at your shoes, clothes, but don't react. Start trying to gently touch them from below - mine tolerated me touching their crop areas gently, touching their tails and toes. And with time, I was able to pick them up for a few seconds and release. Now if I need to examine them for injury, pests, I am able to pick them up without a squawk.
Be sure to always be calm when you are with them, a lesson I am continuously learning. Talk to them in a quiet, soft voice. When you are outdoors in proximity to the coop - even if just passing by - talk to them.
They react to anything new, even minor, with fear. They adjust to things slowly, so keep it simple at first and set a pattern they expect.
Chickens are intelligent and can be trained to do amazing things. And all training involves food.
Regarding love…I do think they have emotions, just wait til the hormones begin! Of my 6, 1 is my best friend when I come into their coop/run for chores….she always stays close, watches what I do, and "helps" me clean the coop….without expected treats!
Good luck, hope this will work for you.
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