This article was published in December 2016 in the Acta Ornithologica journal.
It deals with the interactions between Mute Swans and other waterbirds in fishponds.
You can access it on its publisher's website, as well as its abstract, through the opposite link.
Photo: Mute Swans by Henk Monster, CC BY 3.0, https://commons.wikimedia.org/w/index.php?curid=53959951
Full bibliographical reference:
Gayet G., Calenge C., Broyer J., Mesléard F., Vaux V., Fritz H., Guillemain M. 2016. Analysis of Spatial Point Pattern Shows No Desertion of Breeding Mute Swan Areas by the Other Waterbirds Within Fishpond. Acta Ornithologica 51:151–162. doi: 10.3161/00016454AO2016.51.2.002