...how to get back out again. He'd obviously been there a while and was panicking. I tried luring him out with food but he was too scared to go for it, I even tried to get the grate off by unscrewing the bolts with a coin but they were on too tight. ...
... Eventually, with some patient coaxing with my phone torch, I was able to corale him against the edge he came in from and convince him to go under the gap and escape. He flew home straight away, I'm so glad he wasn't seriously hurt.
I was having a really shit day today and kinda wishing I hadn't bothered coming but then this happens and it all feels worth it. Fly home little buddy.