this was posted on the idaho outdoors group site
Looks like the weather is warm enough for the rattlesnakes to show themselves after a cold winter. This is the earliest we've seen rattlesnakes in the Boise area.
My hiking partner and I came across a 2 1/2 - 3 foot rattlesnake this afternoon.
It was about 50 feet up the trail from the second bridge above the junction of trail 0 and trail 29 in very fine sandy soil along the trees.
For those familiar with the trail, the first bridge above the 0/29 junction has the Coyote picture sign with a poem. The second bridge, on your way to the loop, has a sharp right hand turn after crossing over the water.