Tony Fox confirmed the bird at the airfield yesterday was CDZ, as seen by Brian and Paul G on Sunday. Tony gave a bit more of his biography and sightings:
This was first autumn male we caught at a place called Hvanneyri in west Iceland on 23 September 2017. This site is the home of the Agricultural University of Iceland where they maintain a large area of hayfields adjacent to natural wetlands which are a magnet for the White-fronted Geese in both spring and autumn when they pass through. We are not entirely sure of his parents, as he associated with two other collared individuals V3Y and a bird fitted with a telemetry collar (both adult females when they were caught in the same catch), as well as a unmarked adult that obviously escaped capture on that occasion whilst in Iceland following capture. You will see on the attached list of all resightings of marked Greenland White-fronted Geese away from Wexford (where the vast majority are marked and resighted) your bird wintered last year on Wexford Slobs (as do many of the geese that stage in Hvanneyri), where it was also seen with the same marked/unmarked associates. Interestingly, CDZ was not seen at Hvanneyri this autumn, which is somewhat unusual, since as well as being incredibly site loyal to their winter quarters, these geese also tend to use the same spring and autumn staging areas in successive seasons.
