Anser albifrons – GWYDD DALCEN-WEN – Scarce winter visitor and passage migrant
All records relate to birds of the Greenland race A.a. flavirostris: seven at Marloes Mere 26th Oct, presumably the same as at Dale Airfield 29th Oct, one of which was sporting a neck collar CDZ – put on at Wexford in March 2003. 14 at Trevine Common 26th Oct – 16th Nov.
The above records from the Pembrokeshire Bird Report 2018
Tony Fox (Greenland White-fronted Goose Study) confirmed the bird at the airfield 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. Andrew Simms, Pembs Bird Blog
Skokholm 2014 – colour-marked bird – A vocal White-fronted Goose which headed west over the Farm on 10th November was the first record since 16 on 14th March and 12th April 2010 (RDB). Distant views of a departing goose would not usually lead to sub-specific identification, but close inspection of a distant photograph revealed an orange neck collar and white darvic ring. Although the inscriptions which would have identified the individual were illegible at such a range, the combination of collar and ring show this to be one of over 2600 birds ringed in Greenland (T. Fox pers. comm.). The two subspecies of White-fronted Goose to occur in Wales have both been recorded on Skokholm, although where sub-specific identification has been possible it is Greenland White-fronted Goose A. a. flavirostris which has proven commonest. Skokholm Bird Report 2014