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Joseph McDadeThis image depicts the appearance of a non-fertile egg when observed using what sd known as a“candling” procedure. A very bright light is either placed behind the egg, such as was done throughout history by using a candle, hence the name, or employing more modern methods, using a powerful lamp placed against the broad end of ...
Candling an egg. Candling is a method used in embryology to study the growth and development of an embryo inside an egg.The method uses a bright light source behind the egg to show details through the shell, and is so called because the original sources of light used were candles.
Date/Time Thumbnail Dimensions User Comment; current: 11:30, 11 January 2023: 1,200 × 1,803 (455 KB): Opencooper {{Information |Description=Known as a quitter, this non-viable, fertilized egg was observed using what is known as a candling procedure, whereupon, a very bright light is placed behind the egg, as was done throughout history by using a candle, hence the name.
The common goldeneye or simply goldeneye (Bucephala clangula) is a medium-sized sea duck of the genus Bucephala, the goldeneyes. Its closest relative is the similar Barrow's goldeneye . [ 2 ] The genus name is derived from the Ancient Greek boukephalos ("bullheaded", from bous , "bull " and kephale , "head"), a reference to the bulbous head ...
Common eiders (Somateria mollissima) in the breeding season on Texel, the Netherlands. The common eider (pronounced / ˈ aɪ. d ər /) (Somateria mollissima), also called St. Cuthbert's duck or Cuddy's duck, is a large (50–71 cm (20–28 in) in body length) sea-duck that is distributed over the northern coasts of Europe, North America and eastern Siberia.
The smew (Mergellus albellus) is a species of duck and is the only living member of the genus Mergellus. Mergellus is a diminutive of Mergus and albellus is from Latin albus "white". This genus is closely related to Mergus and is sometimes included in it, though it might be closer to the goldeneyes ( Bucephala ). [ 2 ]
The Labrador duck (Camptorhynchus labradorius) is an extinct North American duck species. It has the distinction of being the first known endemic North American bird species to become extinct after the Columbian Exchange, with the last reported sighting occurring in 1878 in Elmira, New York, [3] and the last preserved specimen was shot in the fall of 1875 in Long Island, New York by J.G. Bell ...
The Silver Appleyard is a "large, sturdily built duck" with a "blocky" physique and a prominent breast. When full grown it weighs between six and eight pounds. [14] Drakes of this breed have a yellow or greenish-coloured bill which sometimes takes on a striated appearance when the duck is older. The drake has a chestnut red breast, flank, sides ...