Isthmian Wren

The isthmian wren (Cantorchilus elutus) is a species of bird in the family Troglodytidae. It is found in Costa Rica and Panama. == Taxonomy and systematics == The isthmian wren, with what are now Cabanis's wren (C. modestus) and the canebrake wren (C. zeledoni), were called the plain wren. A 2015 publication described their different vocalizations and genetic divergence. In 2016 the International Ornithological Committee (IOC) and the Clements taxonomy accepted the split of plain wren into three species. However, BirdLife International (BLI) retains C. modestus as "plain wren" with elutus as a subspecies of it rather than as a full species. The isthmian wren is monotypic. == Description == The isthmian wren is 12.5 to 14 cm (4.9 to 5.5 in) long. Adults have a gray-brown crown and back and a pale russet rump. Their tail is russet brown with darker bars. They have a thin white supercilium, a gray-brown stripe through the eye, and cheeks mottled with dark grayish brown and grayish white. The throat is white, the chest pale grayish, and the belly grayish white with buffy cinnamon sides and flanks. == Distribution and habitat == The isthmian wren is found on the Pacific slope of Costa…