Probability of Black Coat in Rabbit Offspring

During a genetic study on a population of rabbits, researchers identified a gene associated with coat color. The gene exhibits incomplete dominance, where the alleles for black coat color (B) and white coat color (b) produce a phenotype with a gray coat color (Bb). If two heterozygous gray rabbits (Bb) are mated, what is the probability that their offspring will have a black coat?