Willow Flycatcher (Empidonax traillii) lives in riparian woodland edges across North America. It feeds on insects and spiders. Its conservation status is Least Concern.
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Willow flycatchers zip across continents, traveling roughly 1,500-8,000 km (930-4,970 mi) each way between breeding grounds in North America and winter haunts in Mexico, Central America and even as far south as Ecuador. Their preferred breeding spots are dense deciduous thickets, especially willow stands, near water, where they build cup nests tucked into a vertical fork of a shrub or tree.
The southwestern willow flycatcher, a federally endangered subspecies, clings to just about 75 known breeding sites across Arizona, California, Colorado, Nevada, New Mexico, Texas, and Utah. When listed in 1995, scientists estimated only 300-500 breeding pairs survived. Surveys of 578 museum specimens confirmed its winter range stretches from Guatemala to Costa Rica. In two restoration experiments, 90% of nests were in native vegetation versus only 10% in mixed stands, underscoring how native riparian plants are vital for its recovery.
Despite their tiny look, adult willow flycatchers measure 13.3-17.0 cm from tip to tail, weigh just 11.3-16.4 g, and sport a bill only 8.85 mm long in females and 9.5 mm in males. Those dimensions make them larger than many Empidonax relatives but still small enough to hover on a perch and snatch insects mid-air.
The endangered southwestern subspecies lives a short life, research estimates only 1.02-1.63 years, yet some individuals have surprised scientists by surviving far longer; the oldest known willow flycatcher was recaptured 11 years after its original banding. Breeding pairs lay 3-4 speckled eggs, incubate them for 12-14 days, and the chicks fledge after 2-3 weeks.
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In the lush, verdant wetlands, a tiny monarch of the skies weaves its way through the dense foliage, the Willow Flycatcher's olive-grey plumage blending seamlessly into the dappled shade as it flits from branch to branch with an air of effortless elegance. With each fleeting glimpse, its distinctive white eye ring flashes like a beacon, a brief, shining moment of revelation in an otherwise secretive existence. As it darts and swoops in pursuit of its insect prey, the Willow Flycatcher's very presence seems to embody the carefree, whimsical spirit of the natural world.
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