The photo on the left is a muscovite 'wreath' from Brazil. The photo on the right is silver on copper from Michigan. The center photo is of 'three odd nests' from the Arizona-Sonora Desert Museum. The item on the lower left is a calcified birds nest from the Salt River area. The center item is a wirelike 'basket' of copper, while the right white object is a calcite birds nest from Cochise Co., Arizona.