Brown-backed Solitaire

The brown-backed solitaire (Myadestes occidentalis) is a thrush found in montane pine-oak woodlands from Mexico to Honduras. == Taxonomy and systematics == The brown-backed solitaire was originally described as Myadestes obscurus. In 1882, Stejneger split it as the mainland Myadestes obscurus var occidentalis and Myadestes obscurus var. insularis, endemic to the Tres Marías Islands. However, the binomial Myadestes obscurus was later found to have been assigned to another species. By the principle of priority, Stejneger's two taxa were then named M. occidentalis occidentalis and M. occidentalis insularis. In addition to the subspecies M. o. occidentalis and M. o. insularis (both Stejneger, 1882), the brown-backed solitaire has a third subspecies, M. o. oberhoseri (Dickey & van Rossem, 1925), which is found further south than the other two. == Description == The brown-backed solitaire is 20.5 to 21.5 cm (8.1 to 8.5 in) long and weighs 38 to 44 g (1.3 to 1.6 oz). The sexes have the same plumage. Adults of the nominate subspecies M. o. occidentalis have black lores with a white stripe above them, a broken white eye-ring, a white "moustache" stripe, black cheeks, and a white chin and upper throat on an otherwise dull darkish gray head. Their…