If you look on the back it mite have a small violin mark where the eyes are. If it does, the its a brown recluse spider do not touch!
You can by looking at their stripe of brown and seeing if it is big or small.
I think it is white tail spider
Because genetic drift is a totally random process. Think of a small population of beetles. Dominant brown and recessive green. Brown much larger than green in population. The usual background of vegetation and whatnot favors brown beetles, but something happens and the environment changes to favor the color green against it. Predators start taking more brown beetles and the alleles of green beetles are changing in frequency just because of this random change in background color.
Birds or small animals and lizards often feed on beetles.
Light brown (tan) with small dark brown spots.
the partridge egg is a light brown with a few small speckles of a darker brown
I believe this to be a ruby crowned kinglet...