Elk and Moose Horn
Birch bark comes to the rescue again for this field-built call. For those who know the various sounds made by elk and moose (and have a gift for mimicry), a cone of rolled bark can act as a megaphone to amplify your best impressions of these animals. If you have enough bark, make the cone about a foot and a half long, with a large opening of six inches at one end and a smaller opening of one and a half inches. "Eee"s, "oooo"s and "yuh"s can be projected through the horn.