By tahir abbas / Getty Images Almost half of all bird species are in decline globally and one in eight are threatened with extinction, according to a major new report warning that human actions are driving more species to the brink and nature is “in trouble”. Almost half of all bird species are in decline globally and one in eight are threatened with extinction, according to a major new report warning that human actions are driving more species to the brink and nature is “in trouble”. The four-yearly State of the World’s Birds report, which provides a snapshot of the plight of species globally…