Approximately, seven percent of the body's blood is in the capillaries which continuously exchange substances with the liquid outside these blood vessels, called interstitial fluid. This dynamic displacement of materials between the interstitial fluid and the blood is named capillary exchange.pproximately, seven percent of the body's blood is in the capillaries which continuously exchange substances with the liquid outside these blood vessels, called interstitial fluid. This dynamic displacement of materials between the interstitial fluid and the blood is named capillary exchange.
The Base Diet for Birds: Food That Is Balanced. In the wild, birds eat a vast variety of foods: seeds, nuts, grasses, flowers, fruits, insects, the list goes on. The change in seasons brings new types of foods, and birds nourish themselves on whatâs available.
Rating Newest Oldest. Best Answer: I live in the country and most of the birds around here, like house sparrows, mourning doves, common pigeons, and blackbirds, eat corn and soybeans out of the surrounding fields. We also have some trees with berries on them around my house, not sure what the berries are, but I've seen the birds eat them. Then there's the hawks and eagles that eat smaller birds, rodents, and I've seen them take fish out of the river. The owls will eat rodents, too.