Not to be confused with Yukon wolf. The northwestern wolf, Canis lupus occidentalis, also known as the Mackenzie Valley wolf or northern timber wolf is a subspecies of gray wolf in western North America. It ranges from the upper Mackenzie River Valley, southward into central Alberta.
The executor must file a federal income tax return (Form 1041) if the estate has: 1  gross income for the tax year of $600 or more, or. 2  a beneficiary who is a nonresident alien.
If a tax refund is due, the person claiming the refund must fill out Form 1310 (Statement of Person Claiming Refund Due to Deceased Taxpayer) unless the individual is a surviving spouse filing a joint return or a court appointed personal representative.