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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The study of nest predation of reed warbler (Acrocephalus scirpaceus) using artificial nests
 ROHELOVÁ, Markéta
The aim of this thesis was to find out the extent of the predation of the Eurasian Reed Warbler (Acrocephalus scirpaceus) during the laying period in the South Bohemian Region. The survey was done by means of artificial nests containing fake eggs. Additional goal of the thesis was to evaluate the factors that can influence the predation according to measured nest parameters, such as the distance of the artificial nest from free water surface, the depth of water below the nest and the distance from the nearest tree.
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Ethological study of marmoset monkeys in Jihlava Zoo.
 ROHELOVÁ, Markéta
Pygmy marmoset (Cebuella pygmaea) is the smallest species of marmosets (Callitrichidae) and at once the smallest monkey of the world. The diet of pygmy marmoset consists of exudates (gumivory), fruits and insects. It lives in monogamous pairs where dominant pair gave birth to two offspring. Main care is provided by male and older siblings. Mother care about offspring only when nurse them. This study was performed in zoo Jihlava where was the carrying of infants (Cebuella pygmaea) the main focus of observation. The carrying was provided by two different species - pygmy marmoset (Cebuella pygmaea) and golden lion tamarin (Leontopithecus rosalia). This group of marmosets lived in the same cage. Observations were made six hours per week since third to twelve week of offspring life. All behaviour was directly observed and compared with another species of Platyrrhini. The comparison of breeding conditions in zoos and private facilities was another aim. It was found that at the beginning the male (father) carry offspring most often. Since the fourth week it was greatly replaced by lion female. The first observation of young without carrying individual was done in their fifth week. Since this time, both lion males start to carry (male - 1 mainly in 7th and 8th weeks). In 9th week young became more and more independent. The lion female, pygmy marmoset male and lion male - 1 were the most frequently carrying individuals, respectively.
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