to be from an avium complex related to tuberculosis, but scientists are still unsure of how exactly it spreads. Range Matschie's tree-kangaroos are restricted to the Huon peninsula of Papua New Guinea, a subdivision of Tumbanan faunal province, and are the only tree-kangaroos found there. They are also residents on the island of Umboi, which is just off the coast of Papua New Guinea. However, most scientists believe the tree-kangaroos were introduced onto this island and were not originally found there. The Matschies’ prefer to live in deciduous forests and tropical rainforests because they remain in trees for most of their days. They mainly live in the northeast interior of New Guinea and their home range sizes consists of about 25 hectares of the area. Diet The Matschie's tree-kangaroos are mainly folivorous, eating anything from leaves, sap, insects, flowers, and nuts. It was also found that they have eaten chickens in captivity as well as feeding on a variety of plants, carrots, lettuce, bananas, potatoes, hard-boiled eggs, and yams. Since they eat high fiber foods, they only eat maybe about 1 to 2 hours throughout the day and the other time of the day they are resting and digesting their food. Their digestion is similar to that of the ruminants; they have a large, tubiform forestomach, where most of the fermentation and breakdown of tough material takes place at; in the hind stomach, there is a mucosa lining with many glands that help absorption begin here. Reproduction In captivity, the tree-kangaroos can get pregnant at any time of the year and are known to breed well. The female oestrus cycle is between 54.2 and 56.8 days and tree kangaroos are able to produce young at 2 to 2.5 years of age. Mating occurs when a female advances on a male while on the ground; they touch each other's noses and click their tongues. The female is initially resistant to the male's advances. She will hiss and swat at the male but will permit him to mount her within ten minutes. Copulation can last up to sixty minutes afterwards. The gestation period lasts approximately 44.2 days, which is known to be the longest for any of the marsupials. A single observed captive birth occurred above ground, in the branches. Joeys first stick their head out of the pouch at roughly 22 weeks. They will first leave the pouch and feed on