Sika deer Seasonal migration is known to occur in mountainous areas, such as Japan, with winter ranges being up to lower in elevation than summer ranges. Lifestyles vary between individuals, with some occurring alone while others are found in single-sex groups. Large herds gather in autumn and winter. The sika deer is a highly vocal species, with over 10 individual sounds, ranging from soft whistles to loud screams. Sika males are territorial and keep harems of females during their rut, which peaks from early September through October, but may last well into the winter. Territory size varies with habitat type and size
Unclean animal animals" explicitly named in the Qur'an. If someone converts to Islam, Allah "allows them as lawful what is good and prohibits them from what is bad; he releases them from their heavy burdens and from the yokes that were upon them". For other animals, great importance is given to the manner of its death: forbidden are blood and carrion ("dead meat"), and any animal that has been "killed by strangling, or by a violent blow, or by a headlong fall, or by being gored to death". Also forbidden is any animal that has been eaten by a wild animal, unless