Heermann's Gull heermannii

(last update: 23-01-2018 )

Coordinators:
John Cant
Mars Muusse

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1cy June
1cy July
1cy Aug
1cy Sept
1cy Oct
1cy Nov
1cy Dec

2cy Jan
2cy Feb
2cy March
2cy April
2cy May
2cy June
2cy July
2cy Aug
2cy Sept
2cy Oct
2cy Nov
2cy Dec

3cy Jan
3cy Feb
3cy March
3cy April
3cy May
3cy June
3cy July
3cy Aug
3cy Sept
3cy Oct
3cy Nov
3cy Dec

adult Jan
adult Feb
adult March
adult April
adult May
adult June
adult July
adult Aug
adult Sept
adult Oct
adult Nov
adult Dec

adult: September

Last stage of the complete moult (pre-basic molt) with outer primaries missing/growing.

The presence of a partial autumn moult in adults birds is much harder to detect than it is in younger aged birds, since plain grey feathers replace slightly older, but still equally plain grey feathers.

 Heermann's Gull heermannii adult, September 17 2018, Pismo Beach, California USA. Picture: Alex Abela.
P8/-.
Heermann's Gull heermannii adult, September 05 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 03 2016, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult PB moult, September 27 2012, Monterey, California USA. Picture: John Cant.
Heermann's Gull heermannii adult, September 03 2016, Pismo Beach, California USA. Picture: Alex Abela.
P7/P9.
Heermann's Gull heermannii adult, September 03 2016, Pismo Beach, California USA. Picture: Alex Abela.
P7/P10.
Heermann's Gull heermannii adult, September 05 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 03 2016, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 03 2016, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 05 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 05 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 05 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 11 2016, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 10 2016, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 17 2017, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 17 2017, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 22 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 12 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 22 2018, Pismo Beach, California USA. Picture: Alex Abela.
P7/-.
Heermann's Gull heermannii adult, September 03 2016, Pismo Beach, California USA. Picture: Alex Abela.
P8/-.
Heermann's Gull heermannii adult, September 03 2016, Pismo Beach, California USA. Picture: Alex Abela.
P8/-.
Heermann's Gull heermannii adult, September 17 2017, Pismo Beach, California USA. Picture: Alex Abela.
P8/-.
Heermann's Gull heermannii adult, September 17 2017, Pismo Beach, California USA. Picture: Alex Abela.
P8/-.
Heermann's Gull heermannii adult, September 14 2018, Pismo Beach, California USA. Picture: Alex Abela.
P8/-.
Heermann's Gull heermannii adult, September 17 2017, Pismo Beach, California USA. Picture: Alex Abela.
P8/-.