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Endometritis is inflammation of the inner lining of the uterus (endometrium). [6] Symptoms may include fever , lower abdominal pain, and abnormal vaginal bleeding or discharge . [ 1 ] [ 4 ] It is the most common cause of infection after childbirth .
The bill, eyes and legs are black. Adult male and female common fiscals are quite similar except for the rufous lower flank of the female. The calls are a jumbled mix of shrike-like swizzling sounds including some imitations and a harsh Dzzzttt-dzzzt-dzzzt alarm call. Most of those calls however are either threatening or alarm calls.
[25]: 506 More similar to the female mallard in North America are the American black duck (A. rubripes), which is notably darker-hued in both sexes than the mallard, [39] and the mottled duck (A. fulvigula), which is somewhat darker than the female mallard, and with slightly different bare-part colouration and no white edge on the speculum. [39]
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The feet and legs are orange to yellow-orange. The bill is olive green in the male and dull orange with dark markings in the female. The adult male has a darker head and neck. The female is generally lighter-colored than the male and has plain back feathers. A first-year male Hawaiian duck looks like an eclipse-plumaged male mallard.
The lyrebird is an Australian species best known for its ability to mimic man-made sounds. National Geographic has recorded these remarkable birds mimicking such unnatural noises as a chainsaw and ...
Bird vocalization includes both bird calls and bird songs. In non-technical use, bird songs (often simply birdsong ) are the bird sounds that are melodious to the human ear. In ornithology and birding , songs (relatively complex vocalizations) are distinguished by function from calls (relatively simple vocalizations).
Like many members of the Mimidae (in particular mockingbirds), it also mimics the songs of other birds, as well as those of Hylidae (tree frogs), and even mechanical sounds. [citation needed] Because of its well-developed songbird syrinx, it is able to make two sounds at the same time. The alarm call resembles the quiet calls of a male mallard.