I have calculated the delta K for 75 individuals of birds in admixture model and 11 dinucleotide loci: Burning=25,000: MCMC=100,000: K=1-10. I got 2 or 3 for optimum K in different run! Also, when I increase interpretation of K from 1-10 up to 1-15 with Burning=250,000 and MCMC=1000,000 , I received K=6. Thank you in advance for you valuable comments.