I have never seen this before. They passed overhead at about 5.30 in the evening. We first noticed these black lines in the distance, and then before we could really make out what they were heard this squawking sound, getting louder and louder as the flock got nearer.
And then they were overhead. We could hear the sound of their wings beating together and the sounds as they called to each other. Within 5 minutes they had passed over, heading North, their dark line contrasted with the vapour trails from the jet planes high above them.
It was an amazing sight and my only sadness was that I have had to wait 52 years to see it. I shall be looking out closely for them next year.