Broad-tailed hummingbirds return to spring flowers

The mesas around Paonia hold the morning light differently now, filtered through leaves that have reached their full spring green. If you step outside, you might catch the sound that announces their return: a metallic trill that cuts through the air like a tiny bell being shaken at speed. The Broad-tailed Hummingbirds are back from their winter grounds, and the timing is no accident.

These hummingbirds arrive when the landscape offers what they need most. The Sego Lily opens its three white petals in a perfect cup, each bloom lasting just a few days but appearing in sequence across the rocky slopes. The Scarlet Globemallow spreads its orange flowers in dense clusters, each one small but collectively offering a reliable nectar source that persists through the warming weeks. Evening primrose unfolds its pale yellow blooms as the day cools, extending the feeding hours into dusk. The hummingbirds move between these flowers with precision, their needle bills matching the depth of each corolla, their tongues extending to reach nectar at the base.

A male Broad-tailed Hummingbird weighs less than a nickel, but he defends a territory that might span several acres. He positions himself where the flower density is highest, chasing away other hummingbirds with aggressive dives and that distinctive wing trill that serves as both warning and identification. His throat flashes magenta in the right light, a signal visible to rivals and potential mates alike. The females arrive shortly after, more quietly, focused on finding nest sites in the protection of scrub oak or pinyon pine. They build with spider silk and lichen, materials that expand as the eggs grow, creating a structure barely larger than a walnut that will hold two white eggs through the cool mountain nights.

The relationship between hummingbird and flower runs deeper than simple feeding. The Sego Lily depends on these pollinators to transfer pollen between plants scattered across the mesa. The hummingbird's forehead picks up pollen as it feeds, carrying genetic material from flower to flower with each territorial patrol. Scarlet Globemallow has evolved specifically for this partnership: its orange color sits at the peak of hummingbird vision, and its flowers produce nectar throughout the day when the birds are most active. Even the evening primrose benefits, though it opens for night-flying moths. Hummingbirds feed on its early morning nectar, helping to pollinate flowers that might otherwise go unvisited in the brief window before they close.

Listen for that metallic trill if you are walking the trails above Paonia this morning. The sound carries farther than you might expect, bouncing off the sandstone faces and echoing through the oak brush. Each trill marks a small territory claimed, a feeding route established, a breeding season begun. The flowers are open now, waiting in the warming air.