Betula utilis of the tree's native distribution, several forms have orange- or copper-colored bark. "Betula utilis" var. "jacquemontii", from the western end of the native habitat, is widely used because several cultivars have especially white bark. These include: Those cultivars marked have gained the Royal Horticultural Society's Award of Garden Merit. "B. utilis" 'Fascination' has an orange- to mahogany-colored bark, which peels off to reveal a polished-looking layer underneath. The bark of 'Wakehurst Place Chocolate', as the name implies, is dark brown to nearly black. Betula utilis Betula utilis (Himalayan birch, bhojpatra, "bhūrjá") is a birch tree native to the Himalayas, growing
Northern rough-winged swallow Northern rough-winged swallow The northern rough-winged swallow ("Stelgidopteryx serripennis") is a small, migratory swallow. It is very similar to the southern rough-winged swallow, "Stelgidopteryx ruficollis". The genus name, "Stelgidopteryx", is from Ancient Greek and means "scraper wing" and the species name, "serripennis", is derived from Latin and means "saw feather". In the common name, "rough-winged" refers to the serrated edge feathers on the wing of this bird; this feature would only be apparent when holding this bird. Six subspecies of the northern rough-winged swallow are currently recognized. It has been proposed that another race be recognized, "aphracta", but this is