New visitors

Sorry, I’m new

I HAVE rows of birds sitting on the telegraph wire outside my house 

they fly away from time to time but keep coming back 

they are very noisy!

 Can’t take a photo as they are against the light 

I’m not worried about them but am curious 

I have lived here more than 20 years and have never seen them before 

I would guess they are swifts or swallows 

Why have they suddenly taken a liking to my garden