Birds need a lot of food for energy.
Birds need lot of energy because flying uses a lot of energy.
Birds need a lot of energy because they have high metabolic rates and require energy to sustain their constant physical activity, maintain body temperature, and power their efficient respiratory system for flight. Additionally, the lightweight nature of their bodies means they need to constantly expend energy to stay airborne.
earthworms and birds are not equipped to chew food
Birds need to consume lots and lots of food so it will have enough energy to fly. If it didn't consume enough food it would be too tired to fly
All animals (including birds) need to eat. The food that they need is provided for them by their parents while they are young. However when they grow up they ALL have to look for (hunt for) food themselves.
They are herbivores and do indeed need to eat a lot of food.
by whistling and throwing out bread crums. they are attracted to where a lot of birds get their food.
it needs quite a lot of food.
Birds do not need to exchange their money. They just exchange the food qualities with the other biological beings.
Food and attention.
Yes, most birds need fresh water to live. Some seabirds get the water they need from their food sources: fish or marine plants.
Not with cat food, I don't think. Baby birds need pre-chewed food. They can't eat crunchy chunks of food like most animals can. So no, probably not.