Folks used to pay attention to stuff like this because like Muddy, they had to. My parent’s parents generation had lots of things that they saw that they used to forecast weather. A sun dog means a big change is coming, mares tails clouds means its gonna rain, that red sky at morning stuff really works, and wooly worms, and persimmon seeds, and so forth.
And its a lead pipe cinch that when the oak leaves are as big as a squirrels ear e crappie will be on the banks.

There’s a million of them!

BKB