Your silkies should warm up to you with time--though I guess hatchery chicks it's a little harder to say. Ours like to be petted a lot, and talked to. They warm up to treats if they see the other birds eating them but haven't been as quick to grab the goodies as our other birds. Sweet pics, and good luck!
Sorry, just want to make sure I am understanding this right...you are shooting someone else's guinea? Do they know their birds are bothering your chickens? They might be able to keep them cooped for awhile and break their habit of heading to your place. Guineas tend to follow patterns through the day, so sometimes giving them a chance to establish a new pattern helps. As an alternate encouragement to scram, you might try spraying them with water. Ours don't like that, and guineas do learn and adjust their behavior based on what they've learned. Good luck!
The owners, I have been told do know these birds are coming over and bothering our birds. I only got it with a BB and only hard enough to make it run. I am protecting my birds because I am following laws by keeping my chickens in a coop and run on my land. In Surry County you are REQUIRED to keep your birds with in your legal property lines. I have run them off several times a day for 4 or 5 months now, including dousing them with water to no avail. These birds are harassing my birds and getting too close to my kids play yard for my comfort. I have a BB gun for them and access to a rifle for preditors. So, yes, I am popping off BBs at someone else's guineas. I cannot get animal control to assist in this so I have to do something. I have too much to do during the day to be chasing them off for them to be back less then an hour later up to no good in my back yard. I don't want to come off mean hearted, but I am protecting whats mine (my birds and my kids) cause those guinea get a little braver each day. I am not waiting for one to flog one of my kids.