Barn Owl (Tyto alba) breeding biology in relation to breeding season climate
نویسندگان
چکیده
منابع مشابه
Evolutionary conservation of Kv3.1 in the barn owl Tyto alba.
For prey capture in the dark, the barn owl Tyto alba has evolved into an auditory specialist with an exquisite capability of sound localization. Adaptations include asymmetrical ears, enlarged auditory processing centers, the utilization of minute interaural time differences, and phase locking along the entire hearing range up to 10 kHz. Adaptations on the molecular level have not yet been inve...
متن کاملBarn owl (Tyto alba) siblings vocally negotiate resources.
Current theory proposes that nestlings beg to signal hunger level to parents honestly, or that siblings compete by escalating begging to attract the attention of parents. Although begging is assumed to be directed at parents, barn owl (Tyto alba) nestlings vocalize in the presence but also in the absence of the parents. Applying the theory of asymmetrical contests we experimentally tested three...
متن کاملExtra-pair paternity, testes size and testosterone level in relation to colour polymorphism in the barn owl Tyto alba
In many bird populations, individuals display one of several genetically inherited colour morphs. Colour polymorphism can be maintained by several mechanisms one of which being frequency-dependent selection with colour morphs signalling alternative mating strategies. One morph may be dominant and territorial, and another one adopt a sneaky behaviour to gain access to fertile females. We tested ...
متن کاملCombined auditory and visual stimuli facilitate head saccades in the barn owl (Tyto alba).
The barn owl naturally responds to an auditory or visual stimulus in its environment with a quick head turn toward the source. We measured these head saccades evoked by auditory, visual, and simultaneous, co-localized audiovisual stimuli to quantify multisensory interactions in the barn owl. Stimulus levels ranged from near to well above saccadic threshold. In accordance with previous human psy...
متن کاملGrowth and food requirement ̄exibility in captive chicks of the European barn owl (Tyto alba)
The growth and the food requirements of the European barn owl (Tyto alba) were studied in three groups of captive chicks. One group of chicks, raised in ad libitum food conditions by their parents, was used to measure body mass and linear growth of a number of structural body components at their characteristic growth rate. A second group of chicks, hand-raised with food ad libitum until ̄edging...
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ژورنال
عنوان ژورنال: Journal of Ornithology
سال: 2013
ISSN: 2193-7192,2193-7206
DOI: 10.1007/s10336-013-1012-x