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Re: lusitanius weekend in Zarautz
Posted: Sun Dec 09, 2018 9:27 pm
by marsmuusse
Re: lusitanius weekend in Zarautz
Posted: Sun Dec 09, 2018 10:08 pm
by marsmuusse
Another ringed 1CY Lesser Black-backed Gull, from Belgium: b[DF.0F].
- bDF0F_38A2038.jpg (256.47KiB)Viewed 71287 times
- bDF0Frecovery.jpg (45.3KiB)Viewed 71287 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 10:21 am
by marsmuusse
Illustrative bird for what we considered "Mediterranean michahellis 1CY".
It's all about averages of course, but still: larger and more robust, less 'muddy' and patterned hence 'cleaner', advanced in its moult scheme with many wing-coverts and the upper tertials replaced as well for 2nd gen feathers.
- medmicha1cy_38A2144.jpg (121.49KiB)Viewed 71281 times
- medmicha1cy_38A2156.jpg (299.86KiB)Viewed 71281 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 10:34 am
by marsmuusse
lusitanius r[1X9:G] 1CY in November 2018. Ringed as pullus in June 2018 at Donostia / San Sebastián (ES).
Typical distribution for the taxon, frequenting harbours in the direct vicinity of the hatching colony.
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- r1X9G_38A2200.jpg (275.99KiB)Viewed 71281 times
- r1X9Gmap.jpg (142.01KiB)Viewed 71281 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 10:40 am
by marsmuusse
As the previous bird. Here, lusitanius r[C76:G] 1CY in November 2018. Ringed as pullus in June 2018 at Donostia / San Sebastián (ES).
Typical distribution for the taxon, frequenting harbours in the direct vicinity of the hatching colony.
- rC76Gmap.jpg (134.47KiB)Viewed 71281 times
- rC76G_38A2224.jpg (188.38KiB)Viewed 71281 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 10:51 am
by marsmuusse
Lusitanius r[0V9:G] 2CY, anxiously checking the sky as 4 Griffon Vultures drifted in into the valley as the sun broke through.
Note no adult-like grey scaps in this bird.
Life history shows the limits of the distribution for this 2CY bird. Also, instead of faithful to a certain location, birds seem to scavenge the coastline: within 10 days it could be found in Donostia / San Sebastián on 20-11-2018 (right dot), then in Getaria (23-11, central dot), next day in Ondarroa (24-11, leftmost dot) and back again in Donostia (01-12).
- r0V9Gmap.jpg (107.98KiB)Viewed 71280 times
- r0V9G_38A2242.jpg (287.42KiB)Viewed 71280 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 10:57 am
by marsmuusse
Unfortunately two unringed adult birds, hence no provenance on origin, but probably from local stock.
#1.
Note the long pale tongue on the underside of P10, a pattern often associated with michahellis from eastern populations.
- micha_ad_38A2363.jpg (67.94KiB)Viewed 71279 times
#2.
Tongue on P10 rather long, but not angular ending as in previous bird.
- micha_ad_38A2456.jpg (88.37KiB)Viewed 71279 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 11:03 am
by marsmuusse
Another slightly odd bird, this adult still showing active moult in outer primaries (P9-P10 growing), secondaries and tail.
- micha_ad_38A2434.jpg (98.46KiB)Viewed 71279 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 11:13 am
by marsmuusse
Unringed 3CY birds, probably local lusitanius 3rd cycle.
#1.
With extensive head streaking, and, on average, this age class remain more immature in plumage than what one would expect, based on experience from Mediterranean michahellis.
Nice smith pitfall...
- micha_3CY_38A2517.jpg (131.77KiB)Viewed 71277 times
#2.
Even more immature markings in this bird.
- micha_3CY_38A2556.jpg (129.78KiB)Viewed 71276 times
#3.
No mirror on P10, but less black in the tail.
- micha_3CY_38A2601.jpg (136.53KiB)Viewed 71275 times
#4.
In the retarded end of the spectrum:
- micha_3CY_38A3569.jpg (121.56KiB)Viewed 71270 times
#5.
Rather classic bird.
- micha_3CY_38A0456.jpg (111.83KiB)Viewed 71265 times
Re: lusitanius weekend in Zarautz
Posted: Mon Dec 10, 2018 12:24 pm
by marsmuusse
Another bird from Aitor's project, lusitanius o[9B.MK] 2CY. No adult-like grey scaps yet.
- o9BMK_38A2740.jpg (258.18KiB)Viewed 71272 times
- 9bmkrecovery.jpg (66.37KiB)Viewed 71272 times