SeAn Ronayne is a Cork-born ornithologist and naturalist who has spent a life immersed in nature. Following a childhood spent exploring the fields and woods of his hometown, SeA n went on to study Zoology at University College Cork (UCC), as well as a Master's in Marine Biology, also at UCC. After graduating, he worked at a seabird sanctuary in the UK, and then returned to Ireland to enroll in a Master's in Ecological Impact Assessment, specialising in ornithology.

He secured his first professional ornithologist job in 2017, and in 2018 he moved to Barcelona with his partner Alba, a Catalan native, where he began recording birds and wildlife in earnest. And following their return to Ireland in 2020, he embarked on his project to sound-record all of Ireland's regularly occurring birds, bringing him all over the country in search of rare and elusive species, some of which were on the cusp of extinction. He has now just three species left to record, out of almost 200, and has amassed a collection of over 12,000 recordings of Irish birds and other wildlife.

In spring 2024, Birdsong, a documentary about SeA n's recording project, was released to great acclaim. Birdsong is directed by Kathleen Harris and produced by Ross Whitaker and Aideen O'Sullivan for True Films.

SeAn lives near Cobh, County Cork, with Alba, their daughter Laia, and their dog Toby. Nature Boy is his first book.