Enables sequence-specific DNA binding activity. Involved in several processes, including mammary gland development; nervous system development; and visual learning. Acts upstream of or within spinal cord development; thalamus development; and urogenital system development. Located in nucleus. Is expressed in several structures, including central nervous system; embryo ectoderm; limb; paraxial mesenchyme; and tail bud. Orthologous to human FOXB1 (forkhead box B1). [provided by Alliance of Genome Resources, Apr 2022]