| dc.contributor.advisor | Němec, Michal | |
| dc.contributor.author | Kopecká, Kateřina | |
| dc.date.accessioned | 2021-12-06T14:01:38Z | |
| dc.date.available | 2021-12-06T14:01:38Z | |
| dc.date.issued | 2013 | |
| dc.date.submitted | 2012-12-14 | |
| dc.identifier.uri | https://dspace.jcu.cz/handle/20.500.14390/24163 | |
| dc.format | 19 s | |
| dc.format | 19 s | |
| dc.language.iso | cze | |
| dc.publisher | Jihočeská univerzita | cze |
| dc.rights | Bez omezení | |
| dc.title | Obrana hnízd ťuhýka obecného (<i>Lanius collurio</i>) vůči krkavcovitým ptákům: Ovlivňuje intenzitu aktivního mobbingu velikost predátora? | cze |
| dc.title.alternative | Nest defense of the Red-Backed Shrike (<i>Lanius collurio</i>) against corvids: Is the intensity of active mobbing influenced by predator size? | eng |
| dc.type | bakalářská práce | cze |
| dc.identifier.stag | 24698 | |
| dc.description.abstract-translated | Previous work studying the antipredator behaviour of Red-backed Shrike (Lanius collurio) suggest that the size of the predator is one of the crucial factors influencing the use of active during the nest defence. In this study, I tested the effect of predator?s body size using three plush dummies of Jay (Garrulus glandarius): normal-sized (30 cm), crow-sized (40 cm) and raven-sized (50 cm). Two stuffed dummies ? the Jay and Domestic Pigeon (Columba livia f. domestica) were used as controls. I found the size of the predator to be a significant factor, influencing the intensity of active mobbing, particularly the most risky action ? swoops with physical contact. I discuss the decline of active defence against the biggest Jay dummy was caused by fear of adult defenders, not by resignation to vain effort for expel too big (heavy) intruder. | eng |
| dc.date.accepted | 2013-01-21 | |
| dc.description.department | Přírodovědecká fakulta | cze |
| dc.thesis.degree-discipline | Biologie | cze |
| dc.thesis.degree-grantor | Jihočeská univerzita. Přírodovědecká fakulta | cze |
| dc.thesis.degree-name | Bc. | |
| dc.thesis.degree-program | Biologie | cze |
| dc.description.grade | Dokončená práce s úspěšnou obhajobou | cze |
| dc.contributor.referee | Poláková, Simona | |
