| LC control no. | sh2008008279 |
|---|---|
| Topical heading | Migratory restlessness |
| Variant(s) | MR (Migratory restlessness) Pre-migratory restlessness Restlessness, Migratory Restlessness, Pre-migratory Zugunruhe |
| See also | Cage birds--Behavior Captive wild birds--Behavior |
| Found in | Work cat.: Coverdill, A.J. Vernal migratory behavior in captive white-crowned sparrows, Zonotrichia leucophrys, 2008: abstr. (The presence of seasonal unrest in caged birds coincident with migration in free-living individuals led to the identification of migratory restlessness, or the expression of migration specific locomotor activity and behaviors characteristic of migration in captivity; migratory restlessness in captive white-crowned sparrows) p. 16 (caged migrants, for which migratory flight is physically impossible, display intense nocturnal activity during periods of migration in free-living conspecifics; migratory restlessness (MR or Zugunruhe) has been identified as a migratory trait; defined as the expression of migratory activity in caged migratory birds, MR represents sustained migratory flight of wild individuals, not simply pre-takeoff restlessness) Resident birds display migratory restlessness, via WWW, Oct. 21, 2008 (captive migratory birds demonstrate a seasonally appropriate spontaneous urge to migrate, called Zugunruhe; in a new study, Barbara Helm and Eberhard Gwinner took a different approach and discovered that resident species who don't migrate also exhibit this behavior; evidence that Zugunruhe exists in nonmigratory birds) Bartell, P.A. A separate circadian oscillator controls nocturnal migratory restlessness in the songbird Sylvia borin, 2005, via WWW, Oct. 21, 2008 (When confined to a cage, migratory songbirds exhibit nocturnal migratory restlessness (also called Zugunruhe) during the spring and autumn migratory periods, even though these birds are exclusively diurnal during the remainder of the year. Zugunruhe, which has been demonstrated to be under the direct control of a circannual timer, is characterized by a stereotypic "wing-whirring" behavior while the bird is perched) Bird on! Web site, Oct. 21, 2008: Dictionary (Migratory restlessness: The unsettled behaviour of birds immediately before they are due to depart on migration, also called 'pre-migratory restlessness' or (using a German term) 'zugunruhe') A circadian clock regulates migratory restlessness in the blackheaded bunting, Emberiza melanocephala, 2006, via WWW, Oct. 21, 2008 (Many diurnal songbirds undergo long-distance nighttime migrations twice a year between their breeding and wintering grounds. When caged, this is reflected in intense night-time restlessness, which is called Zugunruhe) |
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