While trying to socialize puppies and kittens, it can backfire with cockerels. In chicken society every bird has a place, and will either peck or give way. When they give way, that is respect. It can look like fear of you. And that is what they mean.
Now you don’t want panicked fear, you just want a calm walking away from you, giving you about 5 feet of space all around you. That is respect.
Often times people want a pet. They want them to approach, taking that as being friendly. It is a misinterpretation, it is a lack of fear, lack of respect. Very often these cockerels can become more and more aggressive towards humans.
This forum is filled with posts where the darling becomes the nightmare in an instant. Not probably true, but inexperienced people miss the cues.
It is nearly impossible to believe that the darling stage does not last forever. Or that today’s behavior does not indicates next weeks. As a cockerel comes into his own, it is very common that they become aggressive. Some do, some don’t.
Mrs K