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Mew Gull Identification

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Adult Description

  • Medium-sized to small gull.
  • Unmarked yellow bill.
  • Head and underparts white.
  • Back medium gray.
  • Wingtips black with white spots.
  • Legs yellow.

Immature Description

Juvenal Plumage: Dirty, grayish brown head, back, and chest. Back feathers with light tips, giving a scaly appearance. Underparts light brownish gray, barred on the flanks. Tail dark brown, with slightly paler base. Wingtips blackish. Bill black. Eyes dark. Legs pinkish.
First Winter (Basic I) Plumage: Like juvenal, but head and belly paler.
First Summer (Alternate I) Plumage:Back gray. Wing coverts worn and white. Head whitish. Wingtips worn and pale.
Second Winter (Basic II) Plumage: Back mostly gray; some feathers brown. Head and neck washed with grayish brown. Tail white with irregular black band near tip. Feathers of wingtips black or blackish, with only small white spots.
Relative Size

Relative Sizecrow sizedcrow-sized
  • Both Sexes
    • Length: 16.1-18.1 in (41-46 cm)
    • Weight: 12.7-21.2 oz (360-600 g)
    • Wingspan: 42.1-44.9 in (107-114 cm)

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