At the end of last season i noticed quite a few dark streaks on the outside of the hive. Early this year, it was all cleaned off, i'd guess from rain and snow and such.
Now they are back, not as much as last season, but some. Is this something to be concerned about, or is it normal?
Now they are back, not as much as last season, but some. Is this something to be concerned about, or is it normal?