Likely bird mite

Often found in bird nests, poultry housing, and nearby indoor areas; may wander onto fabrics.

Feeds on the blood of birds, especially at night; may bite people when bird hosts are unavailable.

Small, mobile, and often reddish after feeding. Hides in cracks and nest material between brief blood meals.

Can cause itchy bites and irritant dermatitis in people, and may stress or harm birds. The image is not detailed enough for a reliable species-level identification.