Thurston Reservoir: the season its manager gives for snow geese, the festival, the spring conservation order dates and directions to it.
The seasons are the site manager’s own, quoted and linked below with the day they were read.
Nearby fields can attract huge flocks of Sandhill Cranes in migration, and there are sometimes thousands of Snow Geese here in the winter.Colorado Parks and Wildlife, read October 13, 2026. Read it at the source
A pin takes a color only in the months the refuge or agency that runs it gives for snow geese. The shaded grid is where people have logged a verified snow or Ross’s goose on iNaturalist in October, in any year, brighter where more have been logged; it maps reports, so it thickens where observers stand.
Snow geese gather at Thurston Reservoir.
Witness the incredible white out as thousands of snow geese take flight from their winter roosts along the plains and reservoirs in southeastern Colorado.Colorado Parks and Wildlife, read October 13, 2026. Read it at the source
Prowers County’s scattered ponds, lakes, and reservoirs are waterfowl magnets, and the Snow Goose is no exception.High Plains Snow Goose Festival, read October 13, 2026. Read it at the source
Southeast Region 2020 45,363 56,279 14,953 111,861Colorado Parks and Wildlife, read October 13, 2026. Read it at the source
More reports come in December than in any other month. The bars combine every year on record; the twelve month figure runs from October 14, 2025.
110 research grade snow and Ross’s goose reports from Colorado in the twelve months to October 14, 2026.
Reading this month’s reports from iNaturalist.
usually in February
“Families, bird watchers, and a variety of outdoor enthusiasts come to Lamar each February to see the arctic waterfowl”
Thurston Reservoir State Wildlife Area
Opens February 15, 2027, in 124 days.
February 15 to April 30, 2027
Light Goose Conservation Order Season Area: East of I-25. Dates: Feb. 15–April 30, 2027Colorado Parks and Wildlife, read October 13, 2026. Read it at the source
Check the state’s own regulations before you go: permits, zones and dates are the agency’s to set.
Every fact about Colorado’s snow geese links to the refuge, agency or festival page it comes from, read on October 13, 2026. Tour routes and viewing areas close for weather, hunts and work, so check the site’s own page before you drive. Report tallies are iNaturalist research grade records of snow and Ross’s geese, which count sightings, not birds. Every state is on the snow goose migration hub.