Wow, that picture really makes the hay look like handfuls of fresh grass/greens! I am glad that it is dried timothy though and don't worry- that is fine for your new additions. I just personally avoid feeding rich food items (fresh fruit, veggies, greens, etc.) when they are so young, especially right after they arrive from somewhere else and are dealing with new stressors as they acclimate. I always have free-choice hay available though with the gang, even with youngsters and they are always nibbling on it.
Best of luck!
Lauren