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Data was collected at Porto City Park from December to April, during the species\u2019 courtship and early nesting periods. The most frequent activities for this population were locomotion, resting and feeding. Statistical analysis revealed that male and female behaviours differed significantly throughout the courtship period, as males exhibited more displays and aggressive behaviour while females were more prone to feed in order to meet their increased nutritional and energetic needs. Temporal analyses showed that courtship reached a peak in intensity in February, since it was in this month that the highest values for mating, aggressive behaviour in males and defensive behaviour in females were observed. Behavioural differences were found for this population, with higher feeding rates compared to those of wild populations as well as lower defensive behaviour rates. This paper sheds light on how synanthropized populations, as well as those from Southwestern Europe, show different behavioural responses from other populations. Additional extensive monitoring of population dynamics and factors such as latitudinal differences, habituation to humans and climate change will help to predict future growth and expansion rates.<\/jats:p>","DOI":"10.1007\/s10211-024-00436-w","type":"journal-article","created":{"date-parts":[[2024,2,7]],"date-time":"2024-02-07T12:02:22Z","timestamp":1707307342000},"page":"85-99","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Time budget of a mallard duck population residing in an urban park in northern Portugal during courtship and nesting period"],"prefix":"10.1007","volume":"27","author":[{"given":"Lu\u00eds Eduardo","family":"Santos","sequence":"first","affiliation":[]},{"given":"Liliana","family":"de Sousa","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9929-6232","authenticated-orcid":false,"given":"Ana","family":"Magalh\u00e3es","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2024,2,7]]},"reference":[{"issue":"4","key":"436_CR1","doi-asserted-by":"publisher","first-page":"401","DOI":"10.2307\/1365814","volume":"76","author":"RL Abraham","year":"1974","unstructured":"Abraham RL (1974) Vocalizations of the mallard (Anas platyrhynchos). 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