What is this bird about the size of an adult blackbird with a yellow beak and the colour of runny honey?

The bird you are describing sounds like a Eurasian Golden Oriole (Oriolus oriolus). This species is known for its striking yellow plumage, which can resemble the color of runny honey, and it has a distinctive yellow beak. Golden Orioles are often found in wooded areas and are known for their melodious songs. They are migratory birds, commonly seen in Europe and parts of Asia during the breeding season.