Thread: Chiffchaffs
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Old Wednesday 30th March 2016, 08:38   #12
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Join Date: Jan 2012
Location: Morpeth, Northumberland
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Originally Posted by halftwo View Post
It's all winter flocks here still - not a spring migrant to be seen.
As a bit of a novice, can I ask.... How do you know?

I had my first chiffchaff of the year in Northumberland a whole week earlier than I've seen/heard one before (on 13th March) and was told on this forum (and other places) it would have been a resident. I guess the timing was important for my sighting - being too early to be a spring arrival - but how do you know the flocks you are seeing are over-wintering birds?
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