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1
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- Bucks County, October 2004
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2
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- Head pattern extensive dark half-hood in FG
- Bill shape long and drooped at tip in LG; shorter and straighter
in FG
- White primary tips small in LG; large in FG
- Nape clean white in FG; gray to dusky in LG
- Eye-arcs narrow in LG; broad in FG
- Tertials wider white band in FG
- Legs short in FG
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3
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- White band separating gray wing and black primaries in FG (adult)
- Underside of wing is whiter in FG black restricted to wing tip;
LG shows dark secondaries and black is not restricted to wing tip
- Overall FG is smaller (14.5) than LG (16.5)
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