Chestnut-sided Warbler - Dendroica pensylvanica

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Chestnut-sided Warbler - Dendroica pensylvanica, probably female

 NF Photo 110129 at Gavilan Lodge or Reserve Biologica le Selva

ID:d by Herman
About Chestnut-sided Warbler on wiki

Labels: Costa Rica, NatureFootstep, resor, travel, fågelskådning, birding, pacific, BPW, WBW, photography, fåglar, birds, bird, birdblog, fågelblogg, sweden,  Chestnut-sided Warbler, Dendroica pensylvanica, warbler, Gavilan