Hi, I'm new to this and don't know much about birds. I have had two frequent visitors to my house in the last week or so. I have noticed what seems to the start of a nest (last pic rotated 90 degrees) being built inside the porch. Are they definitely house martins? I hope so because I just bought ready made nests to place outside
Will they use a ready made nest after starting their own? I can't leave the outer door open all the time.
there Barn Swallows rather than House Martins but you were close.
Heres an illustration of what they look like
I hope you find this helpful
https://www.wildlifetrusts.org/wildlife/how-identify/how-identify-swifts-swallows-sand-martins-and-house-martins
Pete
Birding is for everyone no matter how good or bad we are at it,enjoy it while you can