Plik:Collecting of birch sap.jpgI, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share
Plik:Birch sap, 2011-04.jpgDescriptionBirch sap, 2011-04.jpg Eesti: Kasemahl English: Collecting birch sap by attaching a bottle to a branch. Pictured in Estonia in mid-April. Date
Plik:RedAntCollectingSap.JPGI, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share
Plik:Tapping Birch Tree.jpgI, the copyright holder of this work, hereby publish it under the following license: This file is licensed under the Creative Commons Attribution-Share