N.D. coyote trends

North Dakota coyote numbers increased steadily from the mid-1970s to the mid-1990s before taking a dip because of a mange outbreak. Here's a look at coyote population indices, a rough estimate of population trends for the species in North Dakota, since 1975:

- 1975-1979: 17,186.

- 1980-1984: 19,309.

- 1985-1989: 31,144.

- 1990-1994: 39,898.

- 1995-1999: 24,563.

- 2010 projection: 50,000.