This morning he was excited to eat with the rest of my flock. His crop was empty
Do you think it’s safe to say he doesn’t have a respiratory infection, his mucas has cleared. He does ‘yawn’ and always has done quite a bit but it could be just me being paranoid!
I try and naturally worm them with yogurt and ACV. Is there a way to know if they have worms. I will look into a fecal float though.
There is no blood in his droppings and he doesn’t seem very lethargic anymore. He seems to eat and drink enough.
I want to know though can I be sure that it’s not a respiratory infection as our neighbour would like some eggs.
I also found out the silicone that got pulled out was about 2 feet roughly!
Likely, the mucous was from irritation of pulling 2' of silicon out of the crop. Since his crop is emptying and he's not lethargic anymore, he's eating/drinking, it sounds like he's doing much better!
I can't say for sure he doesn't have respiratory infection, but if you only noticed the mucous right after the material was pulled through the esophagus and he has since showed No signs of respiratory illness (coughing, wheezing, sneezing, runny nostrils, facial swelling, pus and/or bubbles in the eyes) then at this point he's probably o.k. It's always a good idea to observe your birds for symptoms, especially new ones you bring in. As far as eggs go, he's not laying any is he?

You mention he's yawning. Do take some time to watch that and check his crop for a while to make sure it's emptying. Also checking inside the beak for any signs of canker or lesions. The yawning may be adjusting the crop, so I would assume your birds have access to some type of Insoluble Grit (Crushed Granite/Flint).
Unfortunately, yogurt and ACV will not act as dewormers. Both however can be a source of probiotics and in moderation can help sooth the gut and can sometimes be beneficial. It's best to gather up a sampling of droppings and have the Vet do a fecal float, if worms are found, the Vet can recommend what products to use. Probably something like Flubendazole (Flubenvet), Levamisole or Panacur (Fenbendazole), but a lot depends on what's available at your location in the world.
Handsome cockerel and flock! I wish you well
