This rook attracted my attention by carrying an acorn in its beak. He walked slowly over the grass to a large stump. At first I thought that he would now climb onto the stump and break the acorn with his powerful beak.
He sometimes stopped, put an acorn on the ground, looked around, and then walked on. Apparently he didn't really want someone to see him carrying this acorn. Therefore, he moved very carefully.
When he reached the stump, he looked around, put the acorn on the ground and began to dig a hole with his beak. When the hole became deep, he put an acorn in it and began to bury it until he leveled it flush with the surface of the earth.
Then he went for the second acorn. He brought it back to the stump and began to bury it next to the first. He looked around every minute, checking if anyone was watching him. Then he continued to work on until he buried the second acorn in the ground.
When the second acorn was buried, he proudly walked away from the stump with a sense of accomplishment. Of course, he probably thought that these acorns would be useful to him in winter. But I think that he probably did not remember where he buried his acorns.
This is how sometimes trees grow out of the ground with the help of birds, who hide tree seeds in the ground and forget about them. Then new trees grow out of them. This is how birds help people grow new trees.
