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Institut de recherche pour la conservation des zones humides méditerranéennes

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Titre :	The Mallard in Slovenia: a review with an estimation of its current population (2020)
Titre original:	The Mallard in Slovenia
Auteurs :	Dejan Bordjan, Auteur
Type de document :	Article
Dans :	Acrocephalus (41(186-187) December, 2020)
Article en page(s) :	69-118
Langues:	Anglais
Résumé :	Abstract Although the Mallard is one of the most numerous and best-studied waterbirds in the world, it received almost no attention in Slovenia. It is one of the most frequently observed waterbirds in our country, with frequency often reaching 100%. Sites with lower frequency either freeze in winter or have a low number of individuals to start with. The Mallard is also the most dominant species (17.5% and 89.0%) with higher dominance at sites less suitable for waterbirds due to the lack of available shoals. Mallards reach their maximum numbers during fall migration and winter. Spring migration has no discernible peak and has been significant only for Lake Cerknica. On shallow waters, the maximum is reached in August and September, a month before fall migration begins, indicating local movement to food-rich sites. Females make up only 36.7% of the observed Mallards and reach the maximum proportion (41.5%) in winter and the lowest in April and May (14.7%), when they nest. The breeding season in Slovenia lasts from mid-January to early December, with the majority of females rearing broods from April to July. Average brood size is 6.2 ± 2.66 and declines with season, age of young and altitude. It varies between
En ligne :	https://sciendo.com/article/10.2478/acro-2020-0006

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