Non-Stop Birding overflow
Nice gallery peter! i won't exclude the possibility of european herring gull (argentatus) in azores in some cases or even some of the so-calles islandic hybrids (argentatus-smith)..can't really clinch the bird on plate 6 and 9 from top but am not a pro of AMHG. We had an adult recently at TCR and these one is also very tricky to tell unless you have a good shot of wing and primary pattern..
Cheers Monti!Indeed- the iceland birds could be very problematic.Check out the new link I just placed on the bottom of the gallery for discussion about adult birds.
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