New York City is a dangerous place for birds. For the second year in a row, a record number of migrating birds were killed after flying headfirst into the city’s nearly invisible skyline, according to the New York Post. At least 1,250 warblers, flickers and other birds died during their annual fall migration, surpassing last year’s grim record of nearly 1,000. And conservationists say the true toll is likely far higher, thanks to an unusually heavy migration season that sent thousands more birds through the five boroughs. City Hall has come up with at least one answer — bird-friendly glass. […]

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