Grey wagtail

We have seen a single grey wagtail on a couple of occasions, in our garden,on the path.  It stays for twenty minutes or so, before flying away. Lovely to watch.

Looking on the RSPB site, the grey wagtail appears to be relatively rare", but I am unsure if there is any significance in seeing this bird, other than our personal enjoyment. 

We live in St. Helens, Lancashire. 

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