Northern Crombec is a species of African Warbler. This species is listed on IUCN red list as a near threatened species, but is evaluated as least concern. This species as an incredible short tailed, that sometimes you might tempted to assume that is has no tail. This crombec construct deep pocket shaped nests suspended from a branch and is mostly made of cob web materials .
This is commonly seen alone or in a small group of upto 5 species, but they also found feeding in a mixed flock of species. In Kenya it can easily be seen in arid and semi-arid areas of Samburu national reserve, Lake Baringo, Lake Bogoria, Tsavo East and West national park.
Kenya Birding 
Hi thanks foor posting this