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Why do most birds eat nuts berries insects nectar or meat but not grass and leaves?
Wiki User
∙ 8y ago
Grass and leaves have a very low energy content; a bird couldn't eat enough grass and then still fly. Fruits, berries and seeds contain much more caloric content. Nectar is even higher in calories, but only tiny hummingbirds can subsist on nectar alone.
In order to get enough calories from grass, it takes a fairly large animal with a complex digestive system; cows and horses, for example.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoGrass and leaves are made of tough cellulose that most animals have trouble digesting.
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Are red pandas predaters or prey?
prediters because they eat birds, birds eggs, small rodents and insects as well as berries, bamboo leaves and blossoms. They are omnivorous.
Why do insects and birds visit flowers?
They do that in order to get nectar which helps pollinate a flower
What kind of food does a hummingbird eat?
nothing
What do towhee birds eat?
Insects and seeds, berries.
What do perching birds eat?
Seeds, Berries, Insects, etc.
What do kiwi birds eat?
they eat berries and leaves
What is the purpose of nectar?
to attract birds and insects
Are oriole is herbivore?
well oriole eat orange nectar and humming birds so its omnivore
What organic molecules do insects gain when they consume large quantities of nectar from flowers?
Carbon, hydrogen and oxygen are the organic molecules which insects gain when they consume large quantities of nectar from flowers.Specifically, the term "nectar" designates the sweet liquid by which flowers attract beneficial birds, insects and mammals. It is secreted from glands in a plant's blossoms, leaves and stems. It offers to its plants' pollinators water concentrated with fructose, glucose and sucrose.
What do chamealeons eat?
Insects birds berries flowers snails spiders scorpions
What do the birds in the rainforest eat?
Birds in the rain forest eat worms, insects and Spiders. Rain forest birds also eat berries and nuts, which are plentiful in a healthy rain forest.
How plants benificial to birds?
Birds can see the colour red very well and are often attracted to it, so if a plant has red berries these are often eaten by birds. Also, in the tropics, red flowers are often visited by birds for their nectar (like hummingbirds) and their pollen is also distributed by birds. Also, many plants attract insects that are in turn eaten by birds. ^^
