00:00Sometimes almost three-quarters of all small birds perish during the winter.
00:07Long-tailed tits are amongst the most vulnerable, so they are always looking for something edible.
00:16Deer, when really hungry, often nibble bark, and that helps the birds.
00:23Even the smallest of wounds can release a dribble of sap.
00:36Here, when temperatures drop, the emerging liquid can freeze and form icicles.
00:47And if the tree is a maple tree, then the icicles will be full of sugar.
00:56A real delicacy.
00:59A sapsicle.
01:03It's rich in energy.
01:07And delicious.
01:08These sweet cretes could, in fact, make the difference between life and death.
01:16But they don't last long.
01:18In only a few short hours,
01:23the banquet is over.
