Once called the Priday Beds, the Blue Beds, Red Beds, Pony Butte, Kennedy and Moss-Plume Beds are owned by Richardsons. The ranch is one of most well-known thunderegg sites which people have been visiting for many decades and it helps that the thundereggs are made the State Rock of Oregon. They may be most common encountered and most studied thundereggs anywhere and yet, best specimens don't come out easily as in case of elusive Priday Plume Eggs. The good specimens would show contrasting bands/layers of white, gray and black colors with some splash of colors such as red, deep blue, black, and yellow. Many thundereggs are also known to contain white to brown (sometimes red) moss/plume structures made of the minerals that have grown first before being preserved by agate.

Blue Beds	Red Beds	Moss & Plume Beds	Other Beds

Red & Blue Beds	Moss & Plume Beds

Rough Appearance:  Oval thundereggs with geometric ridges, sometimes missing rhyolitic top & bottom caps, can be in clusters.
White opal "waterlines" are norm in the thundereggs, but colorful banded and waterlines agates can be found, often with weird inclusions.
It should be noted that the thick caps are the top and bottom of the thundereggs and "waterlines" are parallel to the caps.
Difficult to distinguish between the uncut thundereggs of Blue and Red Beds. Those from Moss & Plume Beds are more compact and rougher.