Scientists and many bird enthusiasts have long assumed that Bullfinches mate for several years, and perhaps even for life.

But believing and knowing are two different things. A professor emeritus at the Norwegian University of Science and Technology (NTNU) has 24 seasons of field observations that now confirm this is indeed true.

“Although guides and reference works have claimed that Bullfinches live as bonded pairs throughout the year and for life, this was based on assumptions,” says Professor Emeritus Olav Hogstad at NTNU’s Department of Natural History.

lick here to read the rest of the article: Confirmed – Bullfinches stick together for years, #ornithology news via @RareBirdAlertUK