box turtle close up eyes blinking yawning exploring carefully before disappearing through hole

This is an american three toed box turtle. It was sneaking by a wood pile when I hear it crawling slowly through the leaves. When I began to film it, it raised its head up to look at me several times. You can see its eyes blink and it opens its mouth wide twice in what appears to be yawning. You can see chips in its shell probably caused by lawn mowers and weedeaters through the years, yet it lives on carefully navigating through yards and woodlands.