Thayer's Gull (thayeri)

(last update: January 22, 2013)

FIGURE 2.

IN: J. Field Ornithol., 70(4):543-554, 1999

Timing and extent of first prebasic molt of scapulars in Thayer's Gulls (THGU) wintering in central California, during 1997/1998 to 1998/1999 winters. See Figure 1 for details.
[Timing of first prebasic molt, expressed as percent area of first basic (B1) scapulars attained. 0% first basic scapulars indicates full juvenal plumage (see text). Numbers per month are 10-d periods. Numbers at top are sample sizes. Data per 10-d period are expressed as percentages of total number of birds that period.]

CLICK HERE FOR FIGURE 1 - HERRING GULL

CLICK HERE FOR FIGURE 3 - GLAUCOUS-WINGED GULL