A third of bird species in Chicago are laying their eggs a month earlier than they did 100 years ago, according to a new study that compares recent observations with data from century-old eggs. Scientists believe that rising temperatures are to blame for the shift in egg-laying.
“The majority of the birds we looked at eat insects, and insects’ seasonal behavior is also affected by climate,” said John Bates, curator of birds at the Field Museum in Chicago and lead author of study. “The birds have to move their egg-laying dates to adapt.”
Source: Some Birds Are Laying Eggs Much Earlier in Response to Climate Change – Yale E360
Ned Hamson's Second Line View of the News 
We have birds that used to fly south during winter, staying here (geese and some small birds), and that already for the last 20 years. (Denmark)
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Same here. Press acts concerned on slow press days and prints old news as if it was new and out of context that planting zones and habitats have changed significantly in last two decades, as you point out.
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