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Iceland x Thayer's Gull hybrid (Kumlien's Gull)
(glaucoides x thayeri)
See this page for a note on taxonomy and a proposed Thayer's/Kumlien's/Iceland scoring system.
IMAGES:
DESCRIPTION:
First Cycle
Second Cycle
Third Cycle
Adult
Iceland x Thayer's Gull hybrid (Kumlien's Gull) (...)
glaucoides x thayeri
| BILL SHAPE: ... | ||||
| HEAD SHAPE: ... | ||||
| WING EXTENSTION: ... | ||||
| POSTURE/HABITS: ... | ||||
| FIRST WINTER | SECOND WINTER | THIRD WINTER | ADULT WINTER | |
| BILL COLOR: | ... | ... | ... | ... |
| LEG COLOR: | ... | ... | ... | ... |
| IRIS/ORB RING: | dark | ... | ... | ... |
| HEAD: | ... | ... | ... | ... |
| UNDERPARTS: | ... | ... | ... | ... |
|
PRIMARIES (folded): |
... | ... | ... | ... |
|
PRIMARIES (in flight): |
... | ... | ... | variable, often w/ thin dark gray (may be nearly black) line on outer webs of P8-10 and subterm bands on P6 or 7 through 9 (never on P5 like Thayer's); large white mirrors (terminal on P10) on P6-10; nearly all white from below |
|
SECONDARIES (in flight): |
... | ... | ... | ... |
| TERTIALS: | ... | ... | ... | ... |
| GREATER COVERTS: | ... | ... | ... | adult gray |
| LESSER & MED COVERTS: | ... | ... | ... | adult gray |
| SCAPULARS: | ... | ... | ... | ... |
| BACK: | ... | ... | ... | ... |
| RUMP: | ... | ... | ... | white |
| TAIL: | ... | ... | ... | white |