For the same reason you do. Bluebirds eat to gain energy to complete the basic functions of life.
No, fish are 2 big.
There is no such bird as you described.
Scavengers will eat these birds.
Scavengers would eat these birds.
Yes because they eat small insects such as crickets.
The spruce is a plant and produces its own food by photosynthesis.
Bluebirds prefer an insectivore diet.
It is bluebird!
They don't really but the bluebirds can eat the newly hatched larvae of monarch butterflies.
The eastern bluebird is Sialia Sialis.
Bluebird is owned by Flowers Foods
corn is at the bottom which is the producer, then the mouse and cricket eat the corn, cat and snake eat the mouse, blubird eats the cricket, and the hawk is at the top of the foodchain and the hawk eats the bluebird, snake, and the cat