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Canada geese leave the winter grounds more quickly than the summer grounds. Elevated thyroid hormones, such as T 3 and T 4, have been measured in geese just after a big migration. This is believed because of the long days of flying in migration the thyroid gland sends out more T 4 which help the body cope
The word "goose" is a direct descendant of Proto-Indo-European *ǵʰh₂éns.In Germanic languages, the root gave Old English gōs with the plural gēs and gandra (becoming Modern English goose, geese, gander, respectively), West Frisian goes, gies and guoske, Dutch: gans, ganzen, ganzerik, New High German Gans, Gänse, and Ganter, and Old Norse gás and gæslingr, whence English gosling.
The study started in the spring of 1950 with 2 male and 4 female pilgrim geese which were mated together in two breeding pens. [15] The geese were bred progressively for 5 years and by 1954, there were 16 breeding pens each with 1 gander and 5 females. [15] All the geese were trap-nested 7 days a week for the duration of the laying season.
Egyptian geese in the wild can live for up to 15 years, while captive individuals have been recorded reaching an age of 35. [ 16 ] The voices and vocalisations of the sexes differ, the male having a hoarse, subdued duck-like quack which seldom sounds unless it is aroused, as well as a louder, breathy call which is performed in a rapid sequence ...
Geese have also been strongly selected for fecundity, with females laying up to 500 eggs per year, compared to 5–12 eggs for a wild goose. [3] [5] As most domestic geese display little sexual dimorphism, sexing is based primarily on physical characteristics and behaviour. Males are typically taller and larger than females, and have longer ...
Canada geese, like humans, are monogamous, and couples often stay paired up for life — making an ideal home environment for orphaned goslings. Flocks will foster abandoned goslings without a peep."
Six eggs in the nest at Mekszikópuszta, Hungary A group of goslings of greylag geese. Greylag geese tend to pair bond in long-term monogamous relationships. [27] Most such pairs are probably life-long partnerships, though 5 to 8% of the pairs separate and re-mate with other geese. [27]
On average, domestic rabbits can live to be between 8 and 12 years old, says Blue Cross, a British animal welfare nonprofit. The oldest recorded domestic rabbit lived to be 18 years and 10 months ...