Breeding of the grey heron Ardea cinerea L. in the Special ornithological reserve Krapje Đol

Kovačić, Ana (2016) Breeding of the grey heron Ardea cinerea L. in the Special ornithological reserve Krapje Đol. Diploma thesis, Faculty of Science > Department of Biology.

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Abstract

Grey heron (Ardea cinerea L.) is a wading bird of the Ciconiiformes order (storks) and Ardeidae family. Of the four subspecies in the world, subspecies Ardea cinerea cinerea L. breeds regularly in Croatia and is common in Europe, Africa and western Asia. Typical habitats are floodplains near lakes, rivers or wetlands. In Nature Park Lonjsko Polje species maintains one of more stable colonies. As a result of river regulations and drainage, Nature Park today depends on artificial flooding and maintaining acceptable water-table. Because of that it is important to monitor breeding populations since that way protection measures and quality of wetlands can be determined. The aim of this study is to investigate behaviour of the breeding population in ornithological reserve Krapje Đol during 2015. Research was conducted in April and May. In 2015 there were 45 breeding pairs. The results were compared with data from previous years, with first two pairs recorded in 2008.It is concluded that the breeding population is stable. Also types of behaviour were researched during breeding and out of seven determined types of behaviour, the dominant one in April was incubation, while in May percentage of incubation dropped and percentage of chick rearing and feeding grew.

Item Type: Thesis (Diploma thesis)
Keywords: grey heron, behaviour, breeding, population trend, wetlands
Supervisor: Mustafić, Perica
Date: 2016
Number of Pages: 46
Subjects: NATURAL SCIENCES > Biology
Divisions: Faculty of Science > Department of Biology
Depositing User: Silvana Šehić
Date Deposited: 24 Mar 2016 16:17
Last Modified: 24 Mar 2016 16:17
URI: http://digre.pmf.unizg.hr/id/eprint/4633

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