European Starlings Return To Thermal, CA Agriculture Land
By Mark Miller | Published: Oct 15, 2025
Today in Thermal, I watched a dark ribbon of birds twist and fold across the open farmland. The Santa Rosa Mountains sat quietly in the distance, the morning cooler than it’s been in months, and the fields stretched endlessly around me. Then—suddenly—a living wave of birds rippled over the crops, turned, and dropped into the grass like a synchronized dance.
They were European Starlings, and there were hundreds—maybe thousands—of them.
As I stood there, camera in hand, I couldn’t help but wonder: Why now? Where did they come from? Do they migrate through here every fall, or live here year-round? Why do they dive into the grass like that—are they eating seeds or bugs?
Seasonal Return: Large flocks of European Starlings have arrived in Thermal’s agricultural fields, signaling the early seasonal shift into fall in the Coachella Valley.
Coordinated Feeding Behavior: Their synchronized “dives” into the grass are strategic group hunts, using a feeding method called gaping to flush and capture insects hidden in the turf.
Predator Dynamics: Hawks perched along power lines and date palms create dramatic aerial interactions, triggering the flock’s swirling defensive formations.
Ecological Tradeoff: Though invasive and aggressive toward native birds, starlings also reduce crop pests—creating a complex balance between disruption and utility.
What I Learned
These starlings are migrant flocks, joining local residents as the season turns. Cooler weather and shorter days pull them into the Coachella Valley, where irrigated farmland, date palms, and dairies provide endless food and safe roosting spots.
Their “dives” aren’t just for show—they’re coordinated hunts. The flock drops in waves to ambush insects hiding in the grass. Each bird jabs its bill into the turf and pries it open—a feeding move called gaping—to grab whatever moves. By moving as one, they flush prey for the rest of the group, turning the field into a shared hunting ground.
But they’re not the only hunters out there. Along the telephone wires and perched high in date palms, hawks wait—patient, silent, scanning for a break in the rhythm. When one stoops from above, the entire flock folds and whirls into a tight formation, confusing the predator’s aim. The sky becomes a storm of movement, then just as quickly, still again.
I also learned these birds are controversial. They’re invasive and aggressive, often displacing native species. Yet they also consume crop pests and remove leftover grain. It’s a strange balance—disruptive but effective.
The Takeaway
Watching them today felt like witnessing the first true sign of fall. These birds arrive early, work as a team, and take full advantage of opportunities. Loud, social, and endlessly adaptable, they’re built to thrive.
Standing in quiet Thermal—with the Santa Rosas glowing, hawks perched in the date palms and on the lines, and thousands of starlings moving like smoke across the field—I realized: the season has already shifted. The desert’s rhythm is changing again, and the starlings, as always, are the first to announce it.
What are European Starlings?
The European Starling is a medium-sized blackbird known for its iridescent feathers and highly social behavior. In breeding season, their plumage shines with purple and green tones; in winter, they appear darker with white speckles. They are famous for forming massive flocks and synchronized aerial displays known as murmurations.
Are European Starlings native to California?
No. European Starlings are an introduced species in North America. They were released in the late 1800s and have since spread across the continent. In California, including the Coachella Valley, they are considered invasive because they compete with native birds for nesting cavities and food sources.
Do European Starlings migrate through Coachella Valley?
Yes. While some starlings live in Southern California year-round, large migratory flocks move into the Coachella Valley during fall and winter. Cooler temperatures and irrigated agricultural land in areas like Thermal provide abundant insects, grain, and safe roosting habitat.
Why do starlings move in tight, swirling formations?
This behavior—called a murmuration—is a defensive strategy. When predators such as hawks approach, the flock compresses and shifts rapidly, confusing the predator and reducing the odds that any one bird is captured. It’s also a form of coordinated movement that helps the flock locate feeding areas efficiently.
What are starlings eating when they dive into fields?
Starlings primarily feed on insects, grubs, and larvae found in turf and agricultural soil. They use a feeding technique called “gaping,” inserting their bill into the ground and prying it open to expose prey. They also eat seeds, grain, and fruit.
Are European Starlings harmful?
They are controversial. Because they are invasive, they displace native cavity-nesting birds and can damage crops. However, they also consume large quantities of agricultural pests. In farm-rich regions like the eastern Coachella Valley, their presence reflects this ecological tension.
Why is Coachella Valley good for bird watching?
The Coachella Valley sits along the Pacific Flyway, one of North America’s major migration corridors. Its mix of desert, wetlands, farmland, and mountain habitat creates biodiversity that attracts resident and migratory birds year-round.
Key hotspots include the Salton Sea and the Sonny Bono Salton Sea National Wildlife Refuge, as well as desert preserves, golf courses, and irrigated agricultural land.
What birds can you see in Coachella Valley?
Depending on season and elevation, you may observe:
Raptors (red-tailed hawks, kestrels)
Wading birds (egrets, herons)
Waterfowl (pelicans, geese, ducks)
Desert species (roadrunners, verdins)
Winter migrants (including large flocks of European Starlings)
Higher elevations in the Santa Rosa Mountains offer additional forest and mountain species.
When is the best time for bird watching?
Fall through early spring offers peak diversity due to migration and cooler temperatures. Early morning provides the best lighting and activity levels. Winter months often bring the largest flocks to agricultural zones and wetlands.
Do you need special equipment to start bird watching?
No. You can begin with simple binoculars and patience. A camera with a telephoto lens enhances the experience if you want to document behavior. Apps like eBird can help identify species and track sightings.
Is bird watching just for photographers?
Not at all. Bird watching is exercise, ecology, and mindfulness combined. Many locals integrate it into hiking, walking, or cycling routines. Observing seasonal changes—like the arrival of winter flocks—deepens your understanding of how the desert ecosystem functions.