A young moose calf, only about five weeks old, nuzzles up to its mother to nurse. Moose in Glacier Bay have their calves in the last part of May. Typically, they have just one, but when conditions are right, and food is abundant, twinning will occur. Occasionally, triplets are even possible – but getting all three to full maturity is a difficult proposition for even the healthiest mother. Photographer: Sean Neilson