I formed the opinion that the author of your pictures may be a German painter Adolf Lins (Adolf Lins, 1856 - 1927). The signature is very similar. Although he mostly signed "Ad Lins", but the option "A Lins" him too. He probably was not enough space to properly sign on your picture
, way, very nice. In addition, the plot - typical for this artist, whose love for the image of poultry nicknamed "Gänselins" (goose Lins), although he and chickens, and ducks, too often portrayed. See his work online a lot.