Ash-Throated Flycatcher (Myiarchus cinerascens) lives in desert scrub across Southwestern North America. It feeds on insects and spiders. Its conservation status is Least Concern.
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Fascinating facts about the Ash-Throated Flycatcher
From the deserts of western Texas to the oak savannas of central Mexico, this flycatcher breeds across a swath of dry scrub, riparian forest, and open woodland, then retreats southward each fall, wintering from southern Mexico down to Honduras. Its range stretches so far east that lone individuals have been recorded on the Atlantic coast, even as far as Florida.
When a pair settles into a tree cavity or a man-made nest box, they typically lay three to four eggs, averaging about 4.3 per clutch. After roughly 15 days of incubation, the altricial chicks hatch blind and naked, then fledge about 17 days later. This rapid development cycle lets the species squeeze two broods into a single spring in favorable years, boosting its already growing population.
Noise from roads or planes isn't just annoying, it actually reshapes the bird's stress hormones. In a field study, baseline corticosterone fell while acute, stress-induced corticosterone rose in both adult females and their nestlings exposed to loud environments. At the highest noise levels, nestlings grew smaller feathers and weighed less, indicating that chronic sound pollution can stunt growth.
Though an insect specialist, the ash-throated flycatcher will occasionally seize tiny vertebrates, small mammals or lizards, and kill them by bashing them against hard objects. Documented prey include Colima giant whiptails and green anoles, and the bird softens these meals by striking them on a branch or rock before swallowing, a rare but telling glimpse of its opportunistic hunting tactics.
Measuring just under a foot from tip to tail, the ash-throated flycatcher spans 7.5 to 8.6 in (19 to 22 cm) in length, stretches 11.8 to 12.6 in (30 to 32 cm) across the wings, and weighs only 0.7 to 1.3 oz (20 to 37 g).
Sources
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As the sun rises over the arid landscape, the Ash-Throated Flycatcher stirs, its grey-brown plumage blending seamlessly into the dusty underbrush. With a flick of its tail and a burst of energetic song, it darts forth, a whirlwind of movement as it pursues the insects that dance in the morning air, its agility and quick reflexes allowing it to snatch unsuspecting prey from the very jaws of its competitors. In this realm of cacti and rocky outcroppings, the Ash-Throated Flycatcher reigns supreme, a master of the desert's hidden corners and secret skies.
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