The staple winter food is conifer needles, clipped directly from the tree, preferably the midcrown of pines though other conifers such as spruce are exploited as well. Spruce needles are high in calcium and their increase in use by females in Spring may be related to egg production In summer the birds can forage on the ground, eating berries, green plants such as blueberry leaves, fungi, and some insects. In winter, when only needles are consumed, the caeca (dead-end extensions of the intestines)and ventriculus(gizzard) increase in size to support digestion. The crop is also well developed: up to 45 cc of needles (about 10% of body mass) can be stored in the crop at the end of the day, to be digested over the duration of the night fast. Like other birds, spruce grouse consume clay,grit or small stones to help their gizzard break down food. Chicks under 1-week old feed on insects and other arthropods, then switch to berries and fungi until the fall, when they start feeding on needles. Birds captured while on the winter diet have been maintained several months without loss of weight, on only pine needles and grit and clay taken from where they were seen consuming it.
A small amusement park for the little ones is conveniently located near the Phrom phong metro station. Adults there will definitely be fun, and of course children. Welcome!!!
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