ML644124344

視聴覚メディア・ノート

FRGU is in center behind leucistic LAGU. Note short bill, extensive eye arcs, more white on primaries.

観察結果の詳細

**rare** continuing. Small gulls similar to LAGU but with much more extensive black on head, shorter bills, and bolder white eye arcs. Associating with LAGU, most of which have completed their prebasic molts by now and are much paler-headed. One seen near Calhoun St. bridge, another further downriver on sand spit towards Trenton Makes. Pics.

追加される種

• Laughing Gull Leucophaeus atricilla
• American Herring Gull Larus smithsonianus
• Lesser Black-backed Gull Larus fuscus