Question

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____ are built to give grains to bird.​

Answer 1

Answer:

Hopper fedder............

Answer 2

Answer:

hopper bird feeder, also called a house bird feeder, works like that. This type of feeder holds birdseed and dispenses it into a tray at the bottom of the hopper. As birds consume the seed, the hopper replenishes the bottom tray aided simply by gravity