|Common Tern - the most numerous Tern in Dublin Bay. (BB)|
|Colour-ring PUL - put on a Common Tern at Sandymount Strand last Autumn.|
|PUL was caught in Dublin last Autumn, but won't be back this year! Ring found at Raudholmane in Norway this year.|
Now it’s always great when someone accompanies a resighting with a picture, so we can be absolutely 100% sure that the ring was read correctly etc. That being said it’s less great when there’s no bird in the picture…
Oddvar found our Common Tern ring while investigating causes of decline of Black Guillemots along the Norwegian coast. The ring was close to the nest of a Great Black-backed Gull.
|Great Black-backed Gull - the largest gull in the world (BB)|
Great Black-backed Gulls have a very flexible diet, that often includes young seabirds at this time of year – those that aren’t great at flying take a few seconds extra to take off and they aren’t as manoeuvrable in the air. An adult Common Tern like PUL is a much trickier meal though – these ‘Sea Swallows’ are skilful and pacy flyers compared to a lumbering GBBGull. I have found the rings of adult terns myself near GBBGull nests and roosts though – sometimes the Tern might have been sick or injured, and sometimes the GBBGull might just get lucky! It’s all part of the circle of life and has been going on for thousands of years. In recent times us humans have been disrupting the natural order by destroying the habitat, nesting sites and food sources of terns and gulls alike – that’s where the problem lies! The resulting effects are felt throughout the seabird communities and wider ecosystem biodiversity around our coasts.
|Great Black-backed Gull. (BB)|
- Brian B