Watermelon Obituary

It is with a sad heart that I have to report the (uh-hm)... passing of 5 watermelon seeds, who have lived such a short life on our back patio.  We are, however, offering a reward for anyone who has information about the whereabouts of the seeds...  Any ideas?

p.s. I am doing a small happy dance right now because it wasn't ME who killed them.