Among the 10 species to have become extinct since 1600 (the conventional date for estimating modernextinctions) are two of the most famous extinct species, the dodo and the passenger pigeon.
A flock of the now extinct passenger pigeons (Ectopistes migratorius) seen in 1740 was 3 to 4 miles (4.8 to 6.4 km) long and 1 mile (1.6 km) wide, it was so dense that it blocked out the sun.
this is a pigeon. not extinct. its a spotted dove.