Heermann's Gull

Closest Relatives at Channel Islands National Park

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Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

#	Park	Country	Probability
1	Channel Islands National Park	🇺🇸 United States	20–30%
2	El Vizcaíno Biosphere Reserve	🇲🇽 Mexico	20–30%
3	Bahía de Loreto National Park	🇲🇽 Mexico	20–30%
4	Olympic National Park	🇺🇸 United States	0–10%
5	Redwood National Park	🇺🇸 United States	0–10%
6	Pacific Rim National Park Reserve	🇨🇦 Canada	<5%
7	Carara National Park	🇨🇷 Costa Rica	Insufficient data
8	Joshua Tree National Park	🇺🇸 United States	Insufficient data
9	Great Bear Rainforest	🇨🇦 Canada	Insufficient data

Quick answers

What are the chances of seeing a Heermann's Gull in Channel Islands National Park?

About 29% of visitor-days record a Heermann's Gull sighting in Channel Islands National Park, based on 2050 observer-days of citizen-science data from GBIF.

When is the best time to see Heermann's Gull in Channel Islands National Park?

August has the highest sighting rate for Heermann's Gull in Channel Islands National Park in our monthly data.