Ecology, behavior, and vocalizations of the Coiba Spinetail ( Cranioleuca dissita ), a Panama endemic

A recent study confirms that the Coiba Spinetail (Cranioleuca dissita), endemic to Islas Coiba and Ranchería off Panama's Pacific coast, is a distinct species from the Rusty-backed Spinetail. The research reveals unique ecological traits, such as its preference for forest and edge habitats, foraging behavior on small branches or vines at heights of 7–10 meters, and a globe-shaped nest made of plant fibers—unlike the Rusty-backed Spinetail's grass-based structure. Acoustically, Coiba Spinetail's song features gradually lengthening notes that slow down, differing from both its genus and the Rusty-backed Spinetail. Genetic distinctiveness, combined with these findings, supports full species status for Coiba Spinetail, which, due to its limited range, is classified as Near Threatened under IUCN criteria.

Blewett, C. M., Angehr, G. R., & de Pérez, I. O. (2021). Ecology, behavior, and vocalizations of the Coiba Spinetail ( Cranioleuca dissita ), a Panama endemic. The Wilson Journal of Ornithology, 133(1), 11–21. https://doi.org/10.1676/20-00032