A wood thrush (Hylocichla mustelina). Thrushes have declined dramatically in number Michael Parr, American Bird Conservancy
The US and Canada have lost almost 3 billion birds since 1970 due to human activities, in a dramatic decline researchers are calling an “overlooked biodiversity crisis”.
This is the first time researchers have attempted to estimate the actual population changes in breeding birds there, and suggests that North America has seen more than a quarter of its birds disappear in recent decades.
Which species will survive the age of extinction? Rebecca Nesbit at New Scientist Live
Kenneth Rosenberg of Cornell University…
