Hirundines nests

Noted John's corresp about House Martins still nesting in Narberth. They are still nesting at Stackpole (a couple of nests at the beginning of the week with quite small young too). Some swallows are also still nesting on the Range (Castlemartin) with small to half grown young. There are usually some late ones but this year I wonder if there are more than usual nesting late.