My silkie rooster Loki is 8 months old. He hasn't crowed yet and still will not roost.
This late development of gender specific characteristics/behaviors is fairly common for some Silkies, especially US ones judging from the info on this forum. Aussie ones I've known were not that slow, in fact they were all precocious.
But the roosting is a separate issue. It can be because he was raised in a cold area where nesting was preferable to perching, and nobody stopped him, or because he was bullied off the limited perch space available, or because he hurt himself but didn't show symptoms so it went unnoticed and he kept nesting because of an inability to get onto the perches or experiencing pain when perching.
He can't seem to aim when trying to eat or forage. When trying to eat from a feeder he continuously misses the holes and when trying to get scratch from the ground, he just gets a beak full of dirt. I had considered that he might be blind but his eyes aren't cloudy and he will follow my fingers in front of his face.
If you are sure it's not his inability to see his target, then the alternative explanations are mostly not good; "acquired brain damage due to trauma caused by external application of force" is about as good as it gets. I've had some purebred Silkies before, and other birds with very large and obstructive crests, and they could not see the ground directly in front of them but managed to not misjudge distances.
If you can take a torch out at night, while he's perching/resting, check how well his pupils dilate and restrict according to the light. You can do this in daytime too without the torch if he's friendly enough to handle, just move him into and out of the shade into the sunshine and watch his pupils' reactions. Check both eyes to see if there is a difference in reaction or reaction time.
I had some Isabrowns who developed neurological degenerative conditions due to genetic issues and they had no obstructions crest-wise but all exhibited the inability to gauge distances correctly, after 3 years approximately of having been normal; this also happened to other people who'd bought from the same hatchery but raised their birds completely differently to mine; but genetic problems can set in much sooner. Some people describe this depth perception problem in some newly hatched ducklings too.
This misjudging distances issue is a common symptom of neurological problems. It could be disease, bad genetics, or other things like toxicity from something in his environment. Even if the others aren't showing symptoms he may have a problem eating behavior like consuming toxic things, toadstools, lead paint, etc, or may have encountered a one-off brain-damaging thing he consumed.
He isn't deaf because he responds to sounds. He has fits of excess energy but He tends to lay around a lot. I've started feeding him separately from the others in an open container in the morning and evening. Is something wrong with him? Is he "Slow" or is there another explanation? Thanks.
Personally I would not breed him unless experimenting to see how strongly genetic in origin this trait may be. It might not be genetic at all. Either way though he's appearing quite faulty and has failed at the competition of achieving breeding viability, so to speak; the only reason I'd breed a male who was physically incapacitated in some way is if I knew it was acquired and definitely not inherited, or, in a probably never likely to happen scenario, if he was genetically very valuable.
It is, however, only early days, he may straighten up and act normal, but I would always put a note in my breed records about him, if he were mine and valuable enough to breed. His offspring would be under suspicion for at least 5 generations to come. I'd inbreed, too, to see if the trait resurfaces, even if his offspring are apparently normal. That's IF he ever comes right and breeds. He may be sterile, depending on what's caused the symptoms showing.
Best wishes.