Lesser Black-backed Gull 2CY, June 01 2017, Utrecht, the Netherlands.
Bird is not ringed, no provenance on origin. Intermedius-type 2CY bird.
Advanced post-juvenile moult in late winter / spring, including wing-coverts, tertials, and several rectrices.
Complete moult not started: P1-P10 old juvenile.
![](../lbbg2cyb/imagesjun/2cyc_38A5334.jpg)
![](../lbbg2cyb/imagesjun/2cyc_38A5332.jpg)
![](../lbbg2cyb/imagesjun/2cyc_38A5320.jpg)
![](../lbbg2cyb/imagesjun/2cyc_38A5319.jpg)
![](../lbbg2cyb/imagesjun/2cyc_38A5335.jpg)
![](../lbbg2cyb/imagesjun/2cyc_38A5337.jpg)
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