APRIL 15,
2019
by
Richard Schuster, Amanda D. Rodewald, Joseph Bennett, Peter Arcese And Scott
Wilson, The
Conversation
Many bird
populations are crashing, largely because they migrate such long distances and
are at risk from human influence at every link in their migratory chain.
One
favourite, the tiny Canada warbler, is among those that find themselves in
trouble. Although this bird weighs only as much as a AAA battery, each spring
it flies more than 5,500 kilometres from its winter home in South America to
breed in Canada, stopping in Mexico, Texas and Michigan along the way. The
Canada warbler makes this incredible journey as many as eight times over the
course of its life.
Unfortunately,
like many North American songbirds, the Canada warbler is at risk of
extinction. Deforestation and human development projects are of the utmost
concern to Canada
warblers and other birds. More than one-third of North America's
1,154 bird species are suffering population declines.
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