Mr. Rooster Is Having Some Issues.

[LPC]

I know next to nothing about chickens (roosters). However, I did a net search for "rooster losing his voice" and found these:
http://poultrykeeperforum.com/viewtopic.php?f=3&t=4536
and
http://www.justanswer.com/bird-vet/3f9u4...-dose.html
and
http://www.justanswer.com/bird-vet/2o2ll...owing.html

I hope they help. Please let us know how things go.