Chaffinch used epiphytic foliose lichen Hypogymnia physodes for construction of nest. The living fragments of thallus were tenuously attached by their lower black surface to the outward  side of the birds nest. Abundance of this species on the trees around the bird’s nest of chaffinch showed that lichen was used for camouflage of birds’ nest. In addition single thallus  fragments of  foliose lichen Parmelia sulcata were used with this purpose too.