Latin Etymology: Icterus (a yellow bird) pustulatus ("pimply")
Streak-backed Oriole (Icterus pustulatus) at Tarcoles, Costa Rica - November 2025
Featured Subspecies: Icterus pustulatus sclateri
Weight: 38g/kg / Length: 20cm / Wingspan: ?
NO UK STATUS / IUCN Red List: Least Concern
This species possesses an unusual bit of sexual dimorphism where in the North of their range the sexes are highly dimorphic where the female is drab, while the population gets further South, both sexes have bright colouration. This is believed to be because with more abundant resources in the tropics, greater territoriality is required to be shared between the partners.
Related Species:
Order: Passeriformes
Family: Icteridae
Genus: Icterus
SUBSPECIES: I. p. alticola I. p. dickermani, I. p. graysonii, I. p. interior, I. p. maximus, I. p. microstictus, I. p. pustulatus, I. p. pustulatus, I. p. ppustuloides, I. p. sclateri, I. p. yaegeri
- Sighting Locations -
Found in the North West
- COSTA RICA 2025 TRIP: Seen at Tarcoles
Further Notes: BirdForum Opus, IUCN Red List, RSPB, Wikipedia, Xeno-canto
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