Bee Identification help

[CrabbitArse]

Can anyone help me identify these bees? They have taken up residence in an external vent leading into a cellar I don't have access to (rented house). I know bees are so important but I don't really want them there as it's right beside my back door, I'm concerned if I block the vent off they'll make their way inside the house to escape.

Does anyone have any advice?

It’s probably Masonry bees which leads a solitary life On her own. She will lay eggs and then seal up the entrance. The bees will hatch, eat their way out and then go.

She is unlikely to sting and should be left alone. We’ve had them, on occasions and they’ve not bothered us.

Yes, probably mason bees. I'd advise leaving them alone as they're good pollinators and won't harm you.

https://en.wikipedia.org/wiki/Mason_bee

Looks more like a bumblebee - do any mason bees have white bums?

If it is a bumblebee and they can get in and out happily, I would leave them be.

www.bumblebeeconservation.org/bumblebee-nests/

Ooh replies...thank you
Originally I thought mason bees too as there were only a few & quite small so I wasn't too concerned. The last couple of days they seem to be much bigger, fluffier & there's absolutely loads of them hence me thinking some type of bumblebee nest.

It also looks like a tree bee, my neighbour has a new nest in her eaves. They are beautiful.

I don't think bees grow so it sounds like you might have both!

I'd leave bumbles alone too - they're unlikely to sting if you don't mess with them.

I know a bloke who does pest control who if he's asked to remove a bumble bee nest first tries to persuade the homeowner to leave it be, and otherwise to wait until he can find someone to rehome it. He won't destroy them.