Sure fun to watch... think they find you as interesting as you find them..

"The Canada Goose"

A familiar and widespread goose with a black head and neck, white chinstrap, light tan to cream breast and brown back. Has increased in urban and suburban areas in recent years; just a decade or two after people intentionally introduced or reintroduced “giant” Canada Geese to various areas, they are often considered pests.
Measurements
Both Sexes

Length
29.9–43.3 in
76–110 cm
Wingspan
50–66.9 in
127–170 cm
Weight
105.8–317.5 oz
3000–9000 g

Relative Size

Larger than a Mallard, smaller than a Mute Swan

Other Names

Ganso canadiense (Spanish)
Bernache du Canada (French)

Cool Facts

At least 11 subspecies of Canada Goose have been recognized, although only a couple are distinctive. In general, the geese get smaller as you move northward, and darker as you go westward. The four smallest forms are now considered a different species: the Cackling Goose.
Some migratory populations of the Canada Goose are not going as far south in the winter as they used to. This northward range shift has been attributed to changes in farm practices that makes waste grain more available in fall and winter, as well as changes in hunting pressure and changes in weather.
Individual Canada Geese from most populations make annual northward migrations after breeding. Nonbreeding geese, or those that lost nests early in the breeding season, may move anywhere from several kilometers to more than 1500 km northward. There they take advantage of vegetation in an earlier state of growth to fuel their molt. Even members of "resident" populations, which do not migrate southward in winter, will move north in late summer to molt.
The “giant” Canada Goose, Branta canadensis maxima, bred from central Manitoba to Kentucky but was nearly driven extinct in the early 1900s. Programs to reestablish the subspecies to its original range were in many places so successful that the geese have become a nuisance in many urban and suburban areas.
In a pattern biologists call “assortative mating,” birds of both sexes tend to choose mates of a similar size.
The oldest known wild Canada Goose was 30 years 4 months old.

Habitat

Marsh

Canada Geese live in a great many habitats near water, grassy fields, and grain fields. Canada Geese are particularly drawn to lawns for two reasons: they can digest grass, and when they are feeding with their young, manicured lawns give them a wide, unobstructed view of any approaching predators. So they are especially abundant in parks, airports, golf courses, and other areas with expansive lawns.
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Food

Seeds

In spring and summer, geese concentrate their feeding on grasses and sedges, including skunk cabbage leaves and eelgrass. During fall and winter, they rely more on berries and seeds, including agricultural grains, and seem especially fond of blueberries. They’re very efficient at removing kernels from dry corn cobs. Two subspecies have adapted to urban environments and graze on domesticated grasses year round.
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Nesting
Nesting Facts

Clutch Size
2–8 eggs
Number of Broods
1 broods
Egg Length
3.3 in
8.3 cm
Egg Width
2.2 in
5.6 cm
Incubation Period
25–28 days
Nestling Period
42–50 days
Egg Description
Creamy white.
Condition at Hatching
Hatchlings are covered with yellowish down and their eyes are open. They leave the nest when 1-2 days old, depending on weather, and can walk, swim, feed, and even dive. They have enough energy remaining in their yolk sac to survive 2 days before feeding.

Nest Description

A large open cup on the ground, made of dry grasses, lichens, mosses, and other plant material, and lined with down and some body feathers.
Nest Placement

Ground

On the ground, usually on a muskrat mound or other slightly elevated site, near water. They prefer a spot from which they can have a fairly unobstructed view in many directions. Female selects the site and does much of nest construction. She adds down feathers and some body feathers beginning after the second egg is laid. She does all the incubation while her mate guards her and the nest.

Found the information at "The Cornell Lab of Ornithology" Many thanks to them.

http://www.birds.cornell.edu/page.aspx?pid=1609