American Robin eggs typically take about 12 to 14 days to hatch after incubation begins. The female robin incubates the eggs by sitting on them to keep them warm and ensure proper development during this period

. Some sources note the incubation period may vary slightly, sometimes reported as 14-16 days, depending on factors like temperature, humidity, and chick health

. The eggs hatch in the order they were laid, usually one at a time, with the chick using an egg tooth to break the shell over several hours

. In summary:

• Incubation duration: approximately 12-14 days (sometimes up to 16 days)
• Female robin primarily incubates eggs; male may occasionally help
• Eggs hatch sequentially, starting with the first laid
• Hatchlings are born helpless and require parental care after hatching