You can still get the cornucopia until the 7th of December when the Thanksgiving events are over. you can get it from killing chickens.
2008 Thanksgiving event. After this event, you may kill certain birds to get them.
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There is some at the Port Sarim Docks.
Chickens and seagulls drop them. They are rare drops so, you might have to kill a lot to get one.-Argh Amber
In actual fact it was. You had to kill the level 138 Turkeys and you can get to kill them by getting Cook's Brother to teleport you there.
The best monster to kill in Runescape would be the King Black Dragon.
It doesn't.
I know this sucks but their is no certain time of place you will get the event but the way I got it was go and kill chickens in lumbridge (or buy the bones) and go to the lumbridge graveyard and bury them about 3 seconds apart. hope this helped :)
He is easy to kill only level 20, you have to be a woman in Runescape to get to him though, my guesses your doing the recruitment Drive Quest.
they kill birds
left click the chicken
train kill stuff