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This is an accepted version of this page This is the latest accepted revision, reviewed on 17 February 2025. Small, long-tailed, seed-eating parakeet Budgerigar Temporal range: Pliocene–Holocene Pre๊ ๊ 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 ...
The black swan, Cygnus atratus is a large waterbird which breeds mainly in the southeast and southwest regions of Australia.An estimated one-quarter of all black swans pairings are homosexual and they steal nests, or form temporary threesomes with females to obtain eggs, driving away the female after she lays the eggs.
One 2020 cohort study of more than 5,000 people published in the Scandinavian Journal of Medicine and Science in Sports had people who were early birds and night owls wear activity trackers on ...
In the early 1920s birds of this variety were known variously as Jades, [3] Apple Greens, [3] May Greens [3] or Satinettes [6] in the green series and as Pearls [3] or Silverwings in the blue series. One of the first tasks of the newly established Colour Committee of the British Budgerigar Society was to sort out this confusion of names, and on ...
It was reported in the Budgerigar Bulletin as early as August 1933, [15] and in more detail in September 1934. [5] At the time of the first report a Cinnamon cock had never been bred. The first cock appeared late in 1933 as a result of a deliberate mating by Porter of a Cinnamon hen and a split Cinnamon cock.
The double-factor Dominant Clearbody, with two Dominant Clearbody alleles, is believed to have a clearer body and darker wing markings than the single-factor Dominant Clearbody. The Dominant Clearbody gene is located on one of the autosomal chromosomes. There is no known linkage of this gene with any other mutation.
An aggressive mosquito species has moved into Los Angeles. So officials are releasing thousands of sterile mosquitoes in bid to fight them. Los Angeles unleashes a new weapon in its fight against ...
In the non-Opaline the wings show dark grey or black markings over a yellow or white ground, but in the Opaline the ends of the barbs of the wing coverts assume the same colour as the body, rather than the ground colour. This suffusion of body colour in the wings produces the opalescent effect which gave the mutation its name.