lusitanius weekend in Zarautz

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marsmuusse
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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Sun Dec 09, 2018 9:27 pm

b[AP8H] is a bird from Xixón/Gijón, ringed as pullus on July 08 2018. That's "late in the season" for Mediterranean michahellis standard.

The picture is not cropped as it shows several lusitanius with open wings, showing pale lozenges on the outer webs of the inner primaries.
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Last edited by marsmuusse on Mon Dec 10, 2018 12:29 pm, edited 1 time in total.

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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Sun Dec 09, 2018 10:08 pm

Another ringed 1CY Lesser Black-backed Gull, from Belgium: b[DF.0F].
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bDF0Frecovery.jpg
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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 10:21 am

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.
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medmicha1cy_38A2156.jpg
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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 10:34 am

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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r1X9Gmap.jpg
r1X9Gmap.jpg (142.01 KiB) Viewed 682 times

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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 10:40 am

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
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rC76G_38A2224.jpg
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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 10:51 am

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
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r0V9G_38A2242.jpg
r0V9G_38A2242.jpg (287.42 KiB) Viewed 681 times

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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 10:57 am

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.
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#2.
Tongue on P10 rather long, but not angular ending as in previous bird.
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Last edited by marsmuusse on Mon Dec 10, 2018 11:06 am, edited 2 times in total.

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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 11:03 am

Another slightly odd bird, this adult still showing active moult in outer primaries (P9-P10 growing), secondaries and tail.
micha_ad_38A2434.jpg
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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 11:13 am

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
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#2.
Even more immature markings in this bird.
micha_3CY_38A2556.jpg
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#3.
No mirror on P10, but less black in the tail.
micha_3CY_38A2601.jpg
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#4.
In the retarded end of the spectrum:
micha_3CY_38A3569.jpg
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#5.
Rather classic bird.
micha_3CY_38A0456.jpg
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Last edited by marsmuusse on Mon Dec 10, 2018 10:07 pm, edited 3 times in total.

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Re: lusitanius weekend in Zarautz

Post by marsmuusse » Mon Dec 10, 2018 12:24 pm

Another bird from Aitor's project, lusitanius o[9B.MK] 2CY. No adult-like grey scaps yet.
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9bmkrecovery.jpg
9bmkrecovery.jpg (66.37 KiB) Viewed 673 times

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