Yellow Wren in dreams
A tiny, busy bird — small attention paid to the small thing that is actually moving.
How yellow changes the reading
Yellow colour is the dream's attention itself — the symbol in yellow is the symbol the dream specifically wants you to notice. Sometimes it is warmth, sometimes warning, often both at once.
The base reading of Wren
A wren in a dream is the dictionary's image of vigilance scaled down to the size of the thing in front of you. It is the part of attention that does not need to be large to be accurate — the small, fast notice that catches what a slower eye would miss. A wren near the home is the dream pointing to a domestic detail you have stopped registering. A wren singing is the dream noting that the small, ordinary commentary on your life still has something to say.