GBB Gulls - UK (1 Viewer)

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HerbieH

Well-known member

• Apr 18, 2011

• #1

I'm trying to age some GBB Gulls and any help would be appreciated.

The June 2006 photo looks like adult plumage to me but an immature bill - could it be 3rd summer?

June 2009 looks like immature plumage to me but an adult bill - could this also be 3rd summer?

Aug 2008 - is this 2nd summer?

Thanks
Herbie

 

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chris butterworth

aka The Person Named Above

• Apr 18, 2011

• #2

Photo #1 = 3rd c.y. ( almost adult looking but with non-adult bare parts colours )
Photos #2 & #3 are 2nd c.y. ( 'Lots' of juv - type feathers in the wings. )

Chris

 

Cristian Mihai

Cristian Mihai

• Apr 18, 2011

• #3

chris butterworth said:

Photo #1 = 3rd c.y. ( almost adult looking but with non-adult bare parts colours )
Photos #2 & #3 are 2nd c.y. ( 'Lots' of juv - type feathers in the wings. )

Chris

Click to expand...

Agreed.

 

lou salomon

the birdonist

• Apr 18, 2011

• #4

1 - looks like a 5cy (4th summer) - it has large apical spots, no immaturity signs in plumage.
2 - 4cy (3rd summer) - note large p10 mirror in old (3rd gen.) primaries, no dark bill mark.
3 - 3cy (2nd summer) - quite typical plumage

http://www.gull-research.org/gbbg/gbbg1cy/gbbg01cyaug.htm

 

T

tittletattler

Well-known member

• Apr 19, 2011

• #5

lou salomon said:

1 - looks like a 5cy (4th summer) - it has large apical spots, no immaturity signs in plumage.
2 - 4cy (3rd summer) - note large p10 mirror in old (3rd gen.) primaries, no dark bill mark.
3 - 3cy (2nd summer) - quite typical plumage

http://www.gull-research.org/gbbg/gbbg1cy/gbbg01cyaug.htm

Click to expand...

Good summary Lou.

 

H

HerbieH

Well-known member

• Apr 19, 2011

• #6

Thanks for the replies and particularly to Lou for the gull-research link which should help with my gull education which still has some way to go!

Herbie