Because you have chosen Bengalese Finch (bf) as your baby bird species, your Control Tutor will be a Bengalese Finch (BF).
Zebra Finches and Long-Tailed Finches will not care for the babies of other species, so you must select to have No Tutor (Isolate) for your experimental baby Bengalese Finch by clicking below (If you want to do a cross-fostering experiment, you can go back and select a different finch species.)