Perceptions can be misleading because unless you perceive the totality of all facts relevant to something, the next fact you discover could overturn what you thought you knew. All swans are white, until you see a black swan.
Intuitions are more integrated across your personal accumulation of perceptions and preconceptions: strict reason or perception makes me doubt that this black thing is a swan, but it looks and floats around like a swan, even if I can't quantify how, so I guess it's a swan. Good enough for now until I encounter something that comes up against the boundary of my blurry intuition of what a swan is; at that point I'll think about it some more.
In a way, I perceive the black swan as a swan because of what my established intuitions about swan-ness are.