Bird eggs are laid by the females and range in quantity from one (as in condors) to up to seventeen (the grey partridge). Clutch size may vary latitudinally within a species. Some birds lay eggs even when the eggs have not been fertilized; it is not uncommon for pet owners to find their lone bird nesting on a clutch of infertile eggs, which are sometimes called wind-eggs.
Birdeggs are laid by the females and range in quantity from one (as in condors) to up to seventeen (the grey partridge). Clutch size may vary latitudinally...
live-bearing mammals), and mollusks lay eggs, although some, such as scorpions, do not. Reptile eggs, birdeggs, and monotreme eggs are laid out of water and are...
In 1659, Flacourt wrote of the "vouropatra – a large bird which haunts the Ampatres and lays eggs like the ostriches; so that the people of these places...
tells the story of Horton the Elephant, who is tricked into sitting on a bird'segg while its mother, Mayzie, takes a permanent vacation to Palm Beach. Horton...
branch of ornithology studying birdeggs, nests and breeding behaviour. The word is derived from the Greek oion, meaning egg. Oology can also refer to the...
have been verified. Ostrich eggs are the largest of any bird, averaging 1.4 kg (3.1 lb). The largest wingspan of any extant bird is that of the wandering...
tortoises lay hard or soft eggs. Several species lay eggs which are nearly indistinguishable from birdeggs.[citation needed] The birdegg is a fertilized gamete...
approximately twice the size of a chicken's egg. Egging is the prehistoric practice of foraging wild-birdeggs. Gull egging is practiced (to varying degrees) in...
People in Southeast Asia began harvesting chicken eggs for food by 1500 BCE. Eggs of other birds, such as ducks and ostriches, are eaten regularly but...
Street. Alfred Bird's first major invention was egg-free custard in 1837. Alfred Bird used cornflour instead of egg to create an imitation of egg custard. It...
the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton. Birds live worldwide and range in...
The egg of the ostrich (genus Struthio) is the largest of any living bird (being exceeded in size by those of the extinct elephant bird genus Aepyornis)...
mistaken for giant birdeggs (birds were not yet recognized as dinosaurs at the time). The first scientifically recognized non-avian dinosaur egg fossils were...
eaten by humans for thousands of years. Bird and reptile eggs consist of albumen (egg white) and vitellus (egg yolk), contained within many different thin...
contrast, birdeggs contain enough to supply the chick with nutriment throughout the whole period of incubation. In the oviparous animals (all birds, most...
to penetrate the eggshell from inside and break free. Birds, reptiles, and monotremes possess egg teeth as hatchlings. Similar structures exist in eleutherodactyl...
stories contain geese that lay golden eggs, though certain versions change them for hens or other birds that lay golden eggs. The tale has given rise to the...
lay eggs that closely resemble the eggs of their chosen host. Some birds are able to distinguish cuckoo eggs from their own, leading to those eggs least...
Egg incubation is the process by which an egg, of oviparous (egg-laying) animals, develops an embryo within the egg, after the egg's formation and ovipositional...
Smoked egg is a food that involves the smoking of birdeggs and fish eggs. Smoked eggs can be prepared with boiled eggs that are then smoked, or by smoking...
goose eggs and miniature horse-shoes, made of iron or lead. The current world record of egg shoeing is 1119 shoes on a single ostrich egg. Any birdegg can...
thickened calcium carbonate shell around their eggs. Because OC-17 is expressed by the hen and not the egg, the bird in which the protein first arose, though...