indoor winter bunnies to outdoor summer bunnies

I would appreciate any tips on how To transition bunnies from
indoors to outdoors in the spring (UK)... any pitfalls I should avoid ?
many thanks for any advice you can offer .

It's mainly the temperature you have to watch. When it starts to warm up (possibly at the b eginning of May like last year, when I was in this position,) then you would just put them in their housing outdoors. Obviously the hutch/enclosure/garden must be predator free, if there are foxes around they will try to get in!

thanks tonibun ... they will be very secure .. i'm a bit concerned re extremes of temperature but I think an outdoor summer will work better for them.