The Santa Marta Screech-Owl has finally been described as Megascops gilesi by Niels Krabbe. First "discovered" in 2007, I took the photo below in 2008. It took 10 years from discovery to description! See: https://www.hbw.com/new-species/santa-marta-screech-owl for a short write-up or read the full paper at: http://asociacioncolombianadeornitologia.org/wp-content/uploads/2017/12/16eA08.pdf.
Citation
Krabbe, N. 201. A new species of Megascops
(Strigidae) from the Sierra Nevada de Santa Marta, Colombia, with notes
on voices of New World screech-owls. Ornitología Colombiana 16: eA08-1.