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Arenal Observatory Lodge
Illustrated Checklist
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Native and Naturalized (511)
Exotic: Escapee (1)
Hybrids (2)
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Gerry Hawkins on 30 Dec 2014
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Luke Berg on 10 Dec 2022
Additional Taxa (58)
- Keel-billed/Broad-billed Motmot Electron carinatum/platyrhynchumLast observed by Rich Hoyer on 23 Mar 2015
- large parakeet sp. (former Aratinga sp.) Eupsittula/Aratinga/Thectocercus/Psittacara sp.Last observed by Bastian Mayer on 1 Feb 2022
- tropical pewee sp. Contopus punensis/cinereus/bogotensisLast observed by Traluxu VIP Travel Costa Rica on 27 Apr 2023
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Néstor Villalobos Rojas on 10 Apr 2024
- Northern/Southern Rough-winged Swallow Stelgidopteryx serripennis/ruficollisLast observed by Paul Heveran on 6 Jan 2020
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Allee Forsberg on 15 Mar 2024
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalusLast observed by Arenal Observatory Lodge Aves on 17 Nov 2023
- tanager sp. (Thraupidae sp.) Thraupidae sp. (tanager sp.)Last observed by Tom Johnson on 19 Jan 2015