Where have all the swallows gone?

I haven't seen any at all this spring, anywhere in Caithness. Last year they were in and out of the garage refurbishing last year's nests by this time. I think I saw the first one in the middle of April last year. Has anybody seen any yet?

haven't seen any and the housemartins have not returned either

We have a few Sand Martins here and I've seen a Swift just the other day, no House Martins yet though.

we have loads of house martins flying about

Here in Brough ,we only have 2 Swallows and no sign of the House Martins. Last year we had 6 or 7 nesting pairs of Swallows and a lot of House
Martins.

My wife saw one swallow today here at Ulbster..

A pair in Melvich last weekend
no others we had quite a few by this time if i recall

I saw a lot of housemartins a few weeks ago in Thurso. It was a warm day and they were feasting on flies down at the river. Haven't seen any swallows yet though. Don't think it's been warm enough to tempt them to Caithness.

Around Wick (Lochshell, Reiss and on the cliff tops at Clyth) they have been visible for the last 2 weeks but have only seen two in Wick so far this year.
(On Monday I saw a single house martin at Lochshell.)

Seeing a lot of swallows and sand martins but as yet no house martins but they are usually the last to arrive, give it another week or so.