Greater Pewee field marks from established online sources
Excerpted descriptions from noted sources with my response in {italics}
Cornell Lab's 'All About Bird' webpage for this species states ,
"Adult Description
Large, stocky flycatcher. {YES}
Large head with slight crest. {YES, see photo below}
Drab gray plumage. {YES, on upperparts}
Faint wingbars. {YES}
No eyering." >>> {YES, see photo below}
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National Audubon Society description on AudubonBirds species website:
"7-7 3/4" (18-20 cm) {?}
Large-headed flycatcher with slight crest. {YES}
Olive-brown above, slightly lighter below. {LOOKS MORE GRAY}
Small light gray throat patch, {?}
yellow lower mandible, {YES, see photo below}
and indistinct wing bars. {Probably, see photo below}
Olive-sided Flycatcher is similar, but has olive-brown flanks, giving it a "vested" appearance. {NOT VESTED, see photo below}
Wood-pewees are smaller and lack slight crest.">> {LARGER & HAS SLIGHT CREST}
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Birds of North America online 'Distinguishing Characteristics:
"Large flycatcher, 18 cm long, mass about 27 g. {PROBABLY}
Drab, unpatterned gray plumage, darker above, {YES}
tufted crest, {PROBABLY}
no eye ring, {YES}
and bicolored bill (blackish maxilla, yellow-orange mandible)." >>{YES}
SeEtta
Cornell Lab's 'All About Bird' webpage for this species states ,
"Adult Description
Large, stocky flycatcher. {YES}
Large head with slight crest. {YES, see photo below}
Drab gray plumage. {YES, on upperparts}
Faint wingbars. {YES}
No eyering." >>> {YES, see photo below}
_________________
National Audubon Society description on AudubonBirds species website:
"7-7 3/4" (18-20 cm) {?}
Large-headed flycatcher with slight crest. {YES}
Olive-brown above, slightly lighter below. {LOOKS MORE GRAY}
Small light gray throat patch, {?}
yellow lower mandible, {YES, see photo below}
and indistinct wing bars. {Probably, see photo below}
Olive-sided Flycatcher is similar, but has olive-brown flanks, giving it a "vested" appearance. {NOT VESTED, see photo below}
Wood-pewees are smaller and lack slight crest.">> {LARGER & HAS SLIGHT CREST}
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--------------
Birds of North America online 'Distinguishing Characteristics:
"Large flycatcher, 18 cm long, mass about 27 g. {PROBABLY}
Drab, unpatterned gray plumage, darker above, {YES}
tufted crest, {PROBABLY}
no eye ring, {YES}
and bicolored bill (blackish maxilla, yellow-orange mandible)." >>{YES}
SeEtta
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