Based on 2,677 research-grade iNaturalist observations in Hawaii, Red-vented Bulbul is most often recorded in April; in Hawaii it behaves like a year-round resident. It ranks #16 among birds recorded in the state in our data.
Pycnonotus cafer
Red-vented Bulbul in Hawaii by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Hawaii in April

Red-crested Cardinal

Pacific Golden-Plover

Zebra Dove
Common Myna

Western Cattle-Egret

Black-crowned Night Heron

Saffron Finch

House Sparrow
Places to look in Hawaii
Foster Botanical Garden
Akaka Falls State Park
Nā Pali Coast State Park
Wahiawa Botanical Garden
Enchanted Floral Gardens of Kula
Kula Botanical Garden
FAQ
When does Red-vented Bulbul appear in Hawaii?
Mainly March–February, with the most records in April.
How common is Red-vented Bulbul in Hawaii?
It ranks #16 by number of iNaturalist observations among birds in Hawaii (2,677 records in our sample).