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The Recommended Dietary Allowance (RDA) for protein is currently 0.36 grams of protein per pound, or about 54 grams for a person who weighs 150 pounds. Depending on their size, two eggs typically ...
Birds which build in trees generally have blue or greenish eggs, either spotted or unspotted, while birds that build in bushes or near or on the ground are likely to lay speckled eggs. The color of individual eggs is also genetically influenced, and appears to be inherited through the mother only, suggesting the gene responsible for ...
[4] [10] [11] After she lays the initial clutch, both her and the territorial male assume primary care of the eggs. [10] The major female lays on average 2 eggs per day and will spend a subsequent 15–90 minutes incubating, then will periodically leave the nest unattended to allow minor females to copulate with the territorial male and lay ...
The most common reproductive strategy for fish is known as oviparity, in which the female lays undeveloped eggs that are externally fertilized by a male. Typically large numbers of eggs are laid at one time (an adult female cod can produce 4–6 million eggs in one spawning) and the eggs are then left to develop without parental care. When the ...
A multi-purpose opening terminating at the vent at the posterior of a bird: birds expel waste from it; most birds mate by joining cloaca (a "cloacal kiss "); and females lay eggs from it. Birds do not have a urinary bladder or external urethral opening and (with exception of the ostrich) uric acid is excreted from the cloaca, along with faeces ...
The inside of the nest is lined with wool and grass. [2] The nests can be up to 13 centimetres (5.1 in) high and are found in trees or shrubs. [2] Yellow wattlebirds lay 2–3 eggs that are salmon-red, spotted and blotched red-brown, purplish-red and blue-grey. [2] Both the males and females incubate the egg and feed the young. [8]
The genus name combines the Ancient Greek kallos meaning "beauty" and kephalē meaning "head". [7] The species is monotypic: no subspecies are recognised. [5] The classification of the gang-gang cockatoo has always been controversial due to the unusual appearance and coloration of the bird, especially its sexual dichromatism.
The female blue-footed booby lays two or three eggs, about four to five days apart. Both male and female take turns incubating the eggs, while the nonsitting bird keeps watch. Since the blue-footed booby does not have a brooding patch, it uses its feet to keep the eggs warm. The incubation period is 41–45 days. Usually, one or two chicks are ...