Introducing the Bald Eagle project, the largest Eagle simulation at high redshift. We use the EAGLE simulation to investigate the high redshift universe by carrying out high resolution re-simulations of representative volumes up to z ~ 6. We use these to investigate the properties of galaxies at these redshifts. A comparison of stellar population synthesis models, coupled with Cloudy, is carried out on the simulated galaxy population, and used to reveal the modelled impact on reionisation parameters.