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Every spring , thousand of barnacle goofball make a grandmigrationfrom their moderate winter home ground in northern Europe and northwesterly Russia to their summer nesting grounds in the Arctic . It ’s a journey of more than 1,800 miles ( 3,000 kilometers ) that usually take about a month , but raw inquiry has found that rising temperatures in the Arctic are pressuring the geese to make the trip in a grueling one - calendar week sprint .
Barnacle geese ( Branta leucopsis ) are medium - size piddle birds found in Europe , Russia , the United Kingdom , Wales and the Arctic , concord to theNational Audubon Society . Until recent age , the timing of the birds ' spring migration mean they arrived in the Arctic right as the snowmelt expose their nesting sites and originate industrial plant ontogeny . The bird would almost immediately lay their eggs , which would then brood 30 or so day later , right at the peak season for plant increase — perfect timing for hungry , grow goslings . [ Photos : Birds Evolved from Dinosaurs , Museum Exhibit show ]
Barnacle geese (Branta leucopsis) are arriving in the Arctic exhausted after their rushed migration.
But in the past few decade , scientists discover that affair have changed . Temperatures in the Arctic have been get warmer before and earlier in the season — by about a mean solar day per year — and this is put substantial insistency on the migrating barnacle goose .
The geese are trying to keep up with these environmental alteration , but they ’re struggling . scientist have found that the goose still leave at about the same time every year , but the animals have shortened theirtravel timeto the Arctic . A trip that used to take about a calendar month now occupy the geese only about a workweek , as the birds will spend less time at their stopover sites or will skip them altogether and just keep take flight .
or else of right away set their testis as they usually do when they arrive at their Arctic nesting grounds , theexhausted geeseneed more than a week to recuperate and build up enough DOE before they can start nesting . By the time the animals are quick to lay their eggs , the grasses and plant the birds feed on have been growing for a few week . As a result , goslings come out from their eggs after the peak growing time of year rather than during it , and that ’s causing the unseasoned birds ' survival charge per unit to turn down .
The researchers bode that cirripede geese may not be able to keep up with a continually warming mood and , as a outcome , their population may suffer . However , the researchers also pointed out that geese are a societal metal money , and if enough individuals depart before , the restmay follow .
The study was published online July 19 in the journalCurrent Biology .
Original clause onLive Science .
