Xenospiza baileyi
The Sierra Madre Sparrow (*Xenospiza baileyi*) is a small, critically endangered passerine endemic to the high-altitude grasslands of central Mexico, distinguished by its unique taxonomic placement as the sole member of its genus. Averaging 13-15 cm (5-6 inches) in length and weighing 16-21 grams, this secretive sparrow features a streaked brown and buff upperparts, a pale buffy throat and belly, and a distinctive dark brown crown bisected by a pale central stripe. Key field marks include a t...
Found exclusively in high-altitude (2,400-3,050 meters / 7,900-10,000 feet) zacatonal grasslands, characterized by dense, tall bunchgrasses with scattered pines and oaks.
Primarily granivorous, feeding on small seeds from various grasses and herbaceous plants, supplemented with insects, especially during the breeding season.
The Sierra Madre Sparrow is a highly secretive bird, spending most of its time hidden deep within dense clumps of tall bunchgrass. It is primarily diurnal, though very little is known about its specific roosting habits. Foraging occurs on the ground, where it gleans seeds and insects from the gra...
The Sierra Madre Sparrow is a non-migratory resident, endemic to the high-elevation zacatonal grasslands of central Mexico. Its distribution is highly fragmented, with isolated populations primarily found within the Trans-Mexican Volcanic Belt and the southern Sierra Madre Occidental. Key strongh...
Critically Endangered
- The Sierra Madre Sparrow is considered one of the rarest and most elusive birds in North America, with its population estimated to be fewer than 10,000 mature individuals. - It is the sole member of its genus, *Xenospiza*, highlighting its unique evolutionary history and genetic distinctiveness...