There are actually three bluebirds - western, eastern and mountain. The mountain bluebird looks quite a bit different than the other two.
Some autotrophs/producers are: Wheat Fungi Algae Cacti Trees Shrubs They are made autotrophs because they can produce their own food.
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an autotroph is an organism capable of synthesizing its own food from inorganic substances, using light or chemical energy.
autotroph and heterotroph