Your canary’s nails grew a lot, you have to cut them. Otherwise you will not be able to walk, since you will stumble on your own nails and you have the possibility of deforming the legs or you can get stuck in the cage and get a wound.
For that, the highlight is to take the canary with one hand, hold one foot between the index finger and the thumb and put it backlit. In this way you will have the possibility to see the internal blood vessels. It is substantial to cut about two or three millimeters of the blood vessel and try to offer the nail a natural way. Assuming you cut some more than you should use some hemostatic cotton so that the canary stops bleeding.