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Hollow Watch
Collect and aggregate data on introduced arboreal habitat across Australia
Anywhere
- Ongoing
Citizen ScienceAnimalsEcology & EnvironmentNature & Outdoorsarboreal habitattree hollownest boxhollow
arboreal habitat
within 25 miles
Jun 20, 2026
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Huron River Watershed Council
Leader / Collector Training
Teach volunteers to collect specimens.
Ann Arbor, Michigan
- Ongoing
Citizen ScienceNature & OutdoorsEcology & EnvironmentInsects & Pollinatorsriverhrwccollectorcouncilhuronwatershedvolunteer
1