Soffits for starlings

Hi,

i once heard a speaker from Exeter University talking about how they were designing starling friendly soffits. Has anyone come across such a thing. I have been happily letting starlings enter the loft via the soffits but it’s time to get new soffits and deal with the damp where the hole has been getting bigger. I’d happily pay extra to have some installed that the starlings could next in. I notice someone asked this question a few years ago and I’m sure there must be a market for this but I can’t find anything advertised.

thanks

Lazybird1