Bubú fúnebre

The slate-colored boubou or slate-coloured boubou (Laniarius funebris) is a species of bird in the family Malaconotidae. It is found in Ethiopia, Kenya, Rwanda, Somalia, South Sudan, Tanzania, and Uganda. Its natural habitats are subtropical or tropical dry forests, dry savanna, subtropical or tropical dry shrubland, and subtropical or tropical moist shrubland. German naturalist Gustav Hartlaub described the slate-colored boubou in 1863. Two subspecies, funebris and degener are recognised. Within the genus Laniarius its position is unclear, but it does not appear to be closely related to the black-plumaged members of the genus such as Fuelleborn's boubou, Laniarius fuelleborni, with which some authorities had previously considered it conspecific. The adult slate-colored boubou is 20 cm (8 in) long and wholly dark slate grey. The male and female are very similar. Immature birds have a plumage more barred with tawny brown and black. The male's call repertoire includes a noisy shhhhh, or strong clicking and coco-weet, with a rising inflexion on the last syllable. The calls differ regionally across the species' range. Songs are frequently sung in a duet between the male and female of a mated pair. A 1983 study observed four types of songs sung by males in duets.…