Daniel O'Brien does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

This is a relatively large cuckoo at around 30cm and 90g. It has a distinctive cuckoo shape and as it is predominantly black it is unlikely to be confused with any other cuckoo in our area.

Read the latest updates from our Cuckoos on their epic migration between the UK and tropical Africa, or track their movements in real-time on our Cuckoo migration map. If you enjoy these updates, ...