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The peak frequency of the sagebrush cricket is at 12.7 kHz and has a sound level between 100.5 and 101.0 dB. Unlike other Orthoptera , sagebrush crickets can sing at low temperatures and have been found to sing at temperatures of -8 degrees Celsius whereas others minimum temperatures are 7 degrees Celsius.
Among birds which habitually borrow phrases or sounds from other species, the way they use variations of rhythm, relationships of musical pitch, and combinations of notes can resemble music. [158] Hollis Taylor's in-depth analysis of pied butcherbird vocalizations provides a detailed rebuttal to objections of birdsong being judged as music. [ 159 ]
Ormia ochracea is a small yellow nocturnal fly in the family Tachinidae. [2] It is notable for its parasitism of crickets and its exceptionally acute directional hearing. The female is attracted to the song of the male cricket and deposits larvae on or around him, as was discovered in 1975 by the zoologist William H. Cade.
Hens lay between 5 and 17 eggs per clutch and the eggs take between 23 and 24 days to hatch. There are between five and 10 young per brood. [ 27 ] The young are raised by the female and fledge in one to four weeks, are completely independent by the tenth to twelfth week, and reach sexual maturity by age one (Ammann, 1957).
Broody hens can be recognized by their behaviour. They sit firmly over the eggs, and when people approach or try to remove the eggs, threaten the person by erecting their feathers, emitting a characteristic sound like clo-clo-clo and will peck aggressively. When broody, hens often temporarily cease eating or reduce their feed consumption.
The eggs are known to be collected by practitioners of folk medicine. [41] [42] [43] The Bhils of Malwa believed that the laying of eggs by red-wattled lapwings in the dry beds of streams as forewarnings of delayed rains or droughts. Eggs laid on the banks on the other hand were taken as indications of normal rains. [44]
The nest is a basket built on the ground in dense vegetation. Laying starts in spring, between mid-March and mid-May in Northern hemisphere temperate regions. About 8 eggs are usually laid per female early in the season; a brood later in the year usually has only 5–8 or fewer eggs. Nests may be re-used by different females.
With a clutch size of five to eight, the oval eggs measure around 56 by 38 millimetres (2.2 in × 1.5 in) and are a dull yellow or buff to brown with some spotting of reddish brown and lavender. [16] As well as the primary nest, nursery nests are constructed with the purpose of roosting with chicks at night and as hiding places in case of ...