How do Canada Geese communicate?

While many people know about the “honk” and “hiss” from geese, there is evidence that Canada geese can communicate at a sophisticated level with many different calls from loud greeting and alarm calls to the low clucks and murmurs of feeding geese.

Canada geese may be one of the most talkative animals after humans. Goslings, or baby geese, begin communicating with their parents while still in the egg. Their calls are limited to greeting "peeps," distress calls and high-pitched trills signaling contentment.

Canada geese form strong family ties. Usually in their second year of life, they find a mate for life. This family closeness means that Canada geese will almost always return to their traditional breeding sites. It also allows two or more different groups of geese to breed in the same geographic area without mixing. This has led to the evolution of almost a dozen different subspecies of Canada geese.

Breeding takes place from late March to early May. Once the 2 to 9 eggs are laid, the female incubates them until they hatch around 28 days later. Minutes after hatching, young Canada geese are able to follow their parents around and leave the nest. Both parents raise the goslings and the family usually stays together for a full year after the birds have hatched.
http://www.youtube.com/Briantdavidson
This is a video from youtube. The photographer came across them hatching while fishing. He put the camera on a tripod and set it to take 2 sec of video every 2 min. It took 4 hours for them to hatch a total of six goslings. Later in the video one of the first hatched comes back into the nest.