I'd expected that the new bees would bring Varroa. Today I found a dead mite from the colony which I hived earlier this week. It was on the floor of their hive.
The feral colony from which both casts came has apparently been there for 3 years. Today I could see their entrance which had lots of activity. It would appear that they are very strong despite this infestation.
The NBU Regional Bee Inspector advises not to leave any comb in the hive when hiving new swarms because of the local AFB outbreak. Two days ago I put the bees into the hive but I had to remove several frames. Today I opened the hive and put clean, comb-free frames back in.
I set up 2 hives a few weeks ago and registered with swarm officers. I've been waiting, but the weather has been relatively cold (air temp at 10am was greater than 15C only on 7th-10th and 12th May - source Radcliffe Observatory).
At about midday yesterday I was told about a swarm in Risinghurst. I took my swarm catching kit (bee suit; bee brush; cardboard box; gaffer tape) and found it in a very easy position. The swarm was on a hedge next to the pavement at chest level. I put the lip of the box beneath the swarm and gave a vigorous shake. In they went.