Combine couscous and all ingredients through sugar in a large saucepan. Add in 2 cups water and bring to a boil.
Once boiling, reduce heat to medium low and cover. Simmer for 10 minutes. Keep covered and remove from heat. Let stand for 10 minutes.
While couscous is simmering, whisk together ingredients for dressing. Once the couscous is done cooking and standing, pour dressing over and toss to coat.
Notes
If you need a good zester to zest these oranges, this is the one I prefer: click here.I have good luck finding blood oranges at Trader Joe's and Kroger from about December until June. If you cannot find blood oranges, it's okay to substitute with medium navel oranges.