Possibly the easiest to identify of autumn fungi: fly agarics with their bright red caps (fading to orange after rain) flecked with white “warts”, the remnants of a veil which protects the fruiting body as it emerges through the soil.
The first three pictures are of the same mushroom seen from different angles; the next three still the same mushroom on the next day. The final picture is one elsewhere, showing its age and the signs of extensive nibbling.