I imagine the conversation went something like this:
MORRIS: "I'm starving."
PHIL: "Me too. What's there to eat around here?"
BERT: "Nothing. We ate all the sparrows."
PHIL: "You ate all the sparrows, you pig!"
MONA: "He ate all the birds. Now there are no more birds."
MORRIS: "Well, there are a few birds, actually" (gives a quick look to Mona and Bert)
MONA (catching on right away): "Say, Phil, you feeling alright? You look a little bit tired."
(Bert, Mona, and Morris begin to skulk towards Phil)
PHIL: "Yeah, I've got this wing that isn't feeling too strong right now, and I really...(suddenly it clicks with Phil)...NO! I feel great. Strong as an ox! Really. Why are you guys looking at me that way? Hey! Move back!"
I think this is about when I heard the commotion. And the result is below. Watch the very brief video only if you like your nature documentaries raw. I have about three minutes of video, but this gives you the basic idea. And yes, the other birds did fight over the dinner bird.