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Unidentified or Hybrid Gulls


Age/Type Date Location Comments
1CY December 2010 Delaware, USA  Nelson's Gull (or backcross)
2CY January 2010 Virginia, USA Nelson's Gull
2CY February 2011 Virginia, USA Nelson's Gull
2nd CY February Choshi, Japan Prob. Glaucous x Glaucous-winged
2nd CY February Choshi, Japan Hybrid or faded Slaty-backed?
Adult February Maryland, USA Probable Herring x Lesser Black-back
Adult January Virginia, USA Probable Herring x Lesser Black-back
Adult February 2011 Virginia, USA Probable Herring x Lesser Black-back
2CY February 2011 Choshi, Japan Probable Glaucous x Glaucous-winged
2CY February 2011 Choshi, Japan Probable Vega x Glaucous
2CY February 2011 Choshi, Japan Probable Vega x Glaucous
2CY February 2011 Choshi, Japan ?? Poss GL x GW
2CY February 2011 Choshi, Japan ?? Poss GL x GW
Adult February 2011 Choshi, Japan Probable Slaty-backed x Glaucous-winged

CY = Calendar Year