Birds delay migration

Site: http://www.bbc.co.uk/nature/15783321
Author: Victoria Gill

Scientists are saying that the birds that usually stay in Northern Europe are changing the time of their migrations to warmer areas.  Those birds include geese, swans, as well as many other species. It is believed that some migrations have been delayed by up to a month compared to the previous thirty years! Research has also shown that the number of some very common birds in England, as well as Denmark, Ireland, and other Northern countries is decreasing, because a lot of them "do not fly as far".

In Finland, many birds were counted ever since 1979, to create what is commonly called a "migration census". This information can tell scientists when different types of birds are migrating to warmer countries, from Finland. Over the last three decades, scientists were able to come to a conclusion that many migration have been delayed in the past few years. Six out of fifteen species of birds that were observed have migrated much later than they should have. Some of these birds include the tufted duck and the greylag goose. Other studies also show that the temperatures in the sea and other bodies of water in the north of Europe have been increasing even more then the air temperatures. This can be partially the cause of delayed migration, because with the rising of the water temperatures, the more fish and other food there is for the birds up in the north. This is causing very big changes in the food chain(s), and the ecological effects are becoming very big.

I believe that the changes with the migation of birds have a lot to do with what we are doing to ur environment, and how we are treating our planet. The greenhouse gasses that are constantly being released from many factories and grand industries around the globe are cauing major global warming. This is not only affecting our well-being on the Earth, but is also affecting the innocent animals, such as birds. The warmer temperatures can confuse the birds, cause some of them to stop migrating completely, and create major negative changes to the delicate balance of food chains in our ecosystems. It is horrible that we are doing this, and it needs to stop soon, before even more creatures are hurt. If we do not reduce the amount of pollution, many different species will suffer, and that is very unfair to them, as well as quite dangerous for the other animals in the biosphere.