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Costa Rica
White-browed Gnatcatcher
Polioptila bilineata
(L 4.0" Wt 0.18-0.25 oz)
Rancho Naturalista Baja
20Jan2023
Highly active and rarely sits still
...five subspecies are recognised.
Polioptila in Greek means gray
feather; bilineata is Latin for
double-striped.
© Wikipedia
© David L.
Ross, Jr.
Macaulay
Library