An Arctic Tern hovers above the water Thursday seconds before diving in and grabbing a small salmon fry in Mendenhall Lake. According to a U.S. Forest Service naturalist, Arctic Terns are catching food to feed their newly hatched chicks which are nesting on the ground around Mendenhall Lake. Some areas of the glacier trails are closed due to these birds nesting on the ground. Arctic Terns migrate 12,000 miles from the Arctic to the Antarctic and back. Somearrive in Juneau around April.