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1st cycle Slaty-backed vs Gl-W x Herring
exploring the differences (if any)

Slaty-backed Gull (from Japan)
Figure 1) October

Figure 2) October

Figure 3) October

Figure 4) October

Figure 5) October

Figure 6) October

Figure 7) October

Figure 8) February

Figure 9) February

Figure 10) February

Glaucous-winged x Herring Gull (presumed; from California)
Figure 11) December

Figure 12) December

Figure 13) December

Figure 14) January

Figure 15) January

Figure 16) January

Figure 17) February

Figure 18) February

Figure 19) February

Figure 20) February

Figure 21) February

Send comments to me at stevechampton, at gmail.

Special thanks to Clive Harris for the Slaty-backed pics. More can be seen here.