Now, 'ere's a funny thing, as Max Miller used to say (You don't know who Max Miller is, or rather was? Goodness, you must be either under 50 or a foreigner - both enviable states in their way).
Yes, here's the funny thing: the local SoCal equivalent of our garden Spotted Flycatcher (when we had them) is the Black Phoebe. I mean, it's a garden-loving flycatching passerine, but there the similarity ends. It builds a nest you wouldn't believe: it is exactly like a House Martin's nest, a quarter-or-half-melon-shaped mud construction plastered into the eaves. I know this because I watched adult Black Phoebes carrying food to their nest on the house across the road from here.
I realise there is absolutely nothing you can do with this information, but it may be a consolation that NOBODY in Huntingdon knows it.
And here is a picture of a Black Phoebe at the nest to convince any sceptics you might bump into in Huntingdon: