Icteridae
- Bobolink Dolichonyx oryzivorus
- Red-winged Blackbird Agelaius phoeniceus
- Red-breasted Blackbird Sturnella militaris
- Eastern Meadowlark Sturnella magna
- Yellow-headed Blackbird Xanthocephalus xanthocephalus Rare/Accidental
- Melodious Blackbird Dives dives
- Great-tailed Grackle Quiscalus mexicanus
- Nicaraguan Grackle Quiscalus nicaraguensis
- Bronzed Cowbird Molothrus aeneus
- Giant Cowbird Molothrus oryzivorus
- Yellow-backed Oriole Icterus chrysater
- Yellow-tailed Oriole Icterus mesomelas
- Spot-breasted Oriole Icterus pectoralis
- Streak-backed Oriole Icterus pustulatus
- Baltimore Oriole Icterus galbula
- Bullock's Oriole Icterus bullockii Rare/Accidental
- Black-backed Oriole Icterus abeillei Rare/Accidental
- Orchard Oriole Icterus spurius
- Black-cowled Oriole Icterus prosthemelas
- Yellow-billed Cacique Amblycercus holosericeus
- Scarlet-rumped Cacique Cacicus uropygialis
- Crested Oropendola Psarocolius decumanus Rare/Accidental
- Chestnut-headed Oropendola Psarocolius wagleri
- Montezuma Oropendola Gymnostinops montezuma
Read more about this topic: List Of Birds Of Costa Rica