Today I am going to share an experience I had this morning about some flock of geese.

It was nearly dawn,and there was a chill in the auumn air.But the calm silence was soon interrupted by the clamorous honking of a flock of geese.Suddenly they appeared overhead -about 20 of them forming a giant V as they started to fly with elegant, powerful wind strokes One of the goose gracefully banked to its left and moved to the back of the group.The awesome sight sparked my curiosity.Why do geese fly in formation?And where are they going?

The goose is a waterbird closely related to the duck and the swan.There are some 40 species of geese world wide and they are commonly seen in Asia,Europe,and north America.The Canada goose is one of the best known species,with characteristics long dark neck and white patch about its throat.Mature makes of the subspecies called giant Canada geese can weigh up to 8 kilograms and have a wing span of 2 meters.This goose spends its summer as far north as Alaska and Northern Canada and then migrate as far south as Mexico for the winter months.

The timing of migration is critical for geese.if they arrive north too soon,the water will still be frozen and vegetation will be scarce.Hence ,Canada geese tends to advance north at the same rate as the season's advance.when they arrive at their destination,the geese divides up into pairs,and each pair then establishes its own bleeding ground.

Flying in formation allows geese to keep one another in view and to respond quickly when the bird infront changes formation ,speed,or altitude.In addition,some experts believe that the air current created by the geese up front makes flight easier for the rest of the flock,reducing air turbulence.in any event it seems that a migrating flock usually consists of a number of families,with adults taking turns leading.

Often Canada goose use the same nest site year after year.The nest is usually made of simple materials,such as sticks,grass and moss.Geese are monogamous-that is they have one mate for life.if one of the pair dies,the surviving goose might accept another mate.Usually,though,it remains alone.

The female lays between four and eight eggs,which she incubates for about 28days.The parents are formidable protectors.When they or their young are threatened,the pair become quite aggresive.with their wings that can deliver powerful blows against predators.

Gosling begin communicating while still in the egg.Their calls range from high-pitched trills (signalling contentment)to distress calls.When communicating with their young and with each other,adults too use a variety of calls.Infact,researchers have isolated at least 13 distinct calls among Canada geese..Geese truly give evidence of being "instinctively wise."

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