Laetiporus sulphureus. Rock Creek Park, Washington, DC, USA
Large shelf fungi, radial zones of tan and brown, 16 cm diameter shelf, white tubes (no gills).
Mushrooms - Chicken of the Woods (Laetiporus sulphureus)
Chicken of the woods mushroom.
Yellow pores mean it is L. sulphureus rather than another member of the genus (whitish pores)
About 30...35 cm total diameter.
Fairly common polypore in southern Finland.
Could be dying and thus the lack of color. Definitely not umbellatus.