Is there any squirrel on the tree branch?
No, there is a bird on the tree branch.
    src        edge_attr  dst
0     2  to the right of    3
1     2   to the left of    5
2     3   to the left of   10
3     3   to the left of    8
4     3               on    2
5     3  to the right of    7
6     3   to the left of    2
7     5  to the right of    2
8     6   to the left of    9
9     7   to the left of    3
10    8  to the right of    3
11    9  to the right of    6
12   10  to the right of    3