Had a cow die once, and we set up on a hill looking over the carcass 200 yds away every evening and every morning for 3 days and never saw anything but crows and possums.
That's interesting - I've cleaned several deer in the field and always assumed that coyotes got the entrails, so it sounded good to me, but I never thought about other scavengers.
I've got a ton of coyotes around the place where I deer hunt, so I plan on going after them full-steam this year (as soon as the second half of Duck season is over).