Northern sportive lemur have large bacteria-filled ceca, which helps them to digest plant matter such as cellulose and break it down into sugars and starches. The northern sportive lemur is preyed on by the native Malagasy tree boa, which hunts the lemurs while they are sleeping in tree holes. Large birds of prey, Falconiformes and Strigiformes, are also natural predators of the lemurs. Along with these ecological threats, the arboreal lemur species are also highly threatened by human charcoal production, which still continues to remove the only remaining forest habitat of the lemurs, greatly restricting their range. "L. septentrionalis" is also illegally hunted
A History of British Birds correspondents. Those who provided skins or information are acknowledged. The species are grouped into families such as "Of the Falcon", using the limited and conflicting scientific sources of the time. The families of land birds are further grouped into birds of prey, omnivorous birds, insectivorous birds, and granivorous birds, while the families of water birds are simply listed, with related families side by side. Each species entry begins on a new page; any spaces at the ends of entries are filled with tail-pieces, small, often humorous woodcuts of country life. "British Birds" remains in print, and has attracted the attention