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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 ...
Ostrich eggs are the largest of all eggs, [4] though they are actually the smallest eggs relative to the size of the adult bird — on average they are 15 cm (5.9 in) long, 13 cm (5.1 in) wide, and weigh 1.4 kilograms (3.1 lb), over 20 times the weight of a chicken's egg and only 1 to 4% the size of the female. [5]
The Wild Bird Conservation Act (WBCA) [19] was enacted on October 23, 1992, to protect exotic bird species from international trade. The Act maintains that wild-caught birds may only be imported into the United States if they are produced in accordance with service-approved management plans for sustainable use of the species. [18]
Oology (/ oʊ ˈ ɒ l ə dʒ i /; [1] also oölogy) is a branch of ornithology studying bird eggs, nests and breeding behaviour. The word is derived from the Greek oion, meaning egg. Oology can also refer to the hobby of collecting wild birds' eggs, sometimes called egg collecting, birdnesting or egging, which is now illegal in many ...
Gull eggs are usually (but not always) larger than any size of chicken egg; for example, a herring-gull egg typically weighs about 85 g (3.0 oz). [4] [a] One source states that a generalized gull's egg is approximately twice the size of a chicken's egg. [5] Egging is the prehistoric practice of foraging wild-bird eggs.
The birds are present in Germany, but their status is unclear. They are also found in Spain, where the most common parrot present is the turquoise-fronted amazon. Portugal, California (where the birds were largely introduced during the 20th century), Puerto Rico, South Africa, and the Netherlands have also reported sightings of Amazona parrots.
The bird flu had a historic outbreak in 2022 and surged once again at the end of 2023. More recently, Hubbell said resurgences in Colorado and California have hurt supplies.
This is an accepted version of this page This is the latest accepted revision, reviewed on 11 January 2025. Small, long-tailed, seed-eating parakeet Budgerigar Temporal range: Pliocene–Holocene PreꞒ Ꞓ O S D C P T J K Pg N Blue cere indicates male Flaking brown cere indicates female in breeding condition Conservation status Least Concern (IUCN 3.1) Scientific classification Domain ...