More than 6,400 migratory birds and other animals were killed in Nevada by drinking water in the cyanide-laced ponds produced by gold mining operations.
migratory birds had red tongues.
( z1 have :ARG0 ( z2 bird :ARG0-of ( z3 migrate ) ) :ARG1 ( z4 tongue :ARG1-of ( z5 red ) ) )