Antique Bennington Stoneware Brown Glaze Cockatoo Bird Mug

Antique Bennington Stoneware Brown Glaze Cockatoo Bird Mug. Approximately 5" tall. There is a maker's imperfection on outside top part by handle that does feel rough to the touch but it's glazed over. Please see last photo. There is another imperfection on top inside rim. Please see 9th photo.