Saguaro fruit is dropping. On June 22, while flowers still hung open on the towering cacti, ripe fruit began falling to the ground—a critical food pulse that sustains the desert's animals before the monsoon arrives. Over the past 60 days, have responded in force, with more than 110 sightings recorded across the region. were last seen on June 18, their breeding season waning as migrants and other species move in to claim the sugar-rich bounty.
are already on the ground foraging the fallen fruit—the reliable sign of the harvest. For the Tohono O'odham people, this moment marks their new year. The ripening of saguaro fruit has long been the signal to gather, using long saguaro-rib poles to knock more fruit down and call the summer rains. The ecological and cultural calendars align precisely here; what the desert needs and what its people have always practiced remain one and the same.
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They share the dusk with other species, though not always comfortably. The ornate tree lizards that spent the afternoon on sun-warmed rocks are retreating now, and the western diamond-backed rattlesnakes that wait near rodent trails are becoming active. Mourning doves and white-winged doves settle into mesquite to roost, their soft calls dropping off as the light fades. The nighthawks move into the space the diurnal birds vacate. The velvet mesquite is in fruit right now, and that fruit draws insects that draw more insects; the understory around those trees can be a productive hunting ground after dark.
The nighthawks will be here until late summer, then gone. They are long-distance migrants, wintering in South America, and they leave before the desert fully cools. For now, though, they are part of the nightly transition at Deer Valley, the birds that mark the exact moment when the day shift ends and the night shift begins.
Look west if the sky is still pale where you are. The nighthawks fly low against the horizon first, then work higher as darkness fills in. The wing bar catches whatever light remains.
