Ivory Gull

A distinctive "two year" gull, it is a very rare vagrant to the Great Lakes. Most records involve juvenile-type birds from December and January.

Juvenile / First Cycle

June

July

August

September

October

November

macaulaylibrary.org/asset/189244971

macaulaylibrary.org/asset/78668341

December

macaulaylibrary.org/asset/360993621

macaulaylibrary.org/asset/548984451

macaulaylibrary.org/asset/43839891

January

macaulaylibrary.org/asset/403390141

macaulaylibrary.org/asset/497903521

macaulaylibrary.org/asset/33712421

macaulaylibrary.org/asset/92669681

February

macaulaylibrary.org/asset/24604501

March

macaulaylibrary.org/asset/49928601

macaulaylibrary.org/asset/80467441

macaulaylibrary.org/asset/50964761

macaulaylibrary.org/asset/50736091

April

May

Second Cycle / Adult

The change from first to second cycle depends on the timing of the start of the inner primary molt. May/June is used here as an arbitrary cutoff. There is no distinctive "second year" plumage for Ivory Gull, so birds remain in an "adult-like" plumage once their molt is complete.