Older sets
 
Yellow w/red hibiscus flower
Blue w/red hibiscus flower
Red (pink?) w/white heart
Yellow w/red heart
White w/red heart
Yellow w/pirate eyepatch and skull/crossbones
Lucky  yellow w/green shamrock
Lucky green w/black shamrock
Black w/skunk stripe*
Anarchy duck purple w/black
Dollar sign pinkish purple
Blue Peace duck
Orange w/glitter?
 
West Coast (LA on front)  
East Coast (NY on front)  
Danger Duck (black w/green biohazard symbol)  
Sammy (American flag duck)  
Ninja Duck (black w/white mask & straps -- oh dear, I was calling that 'bondage duck')  
Playa (black w/8 ball on front)*
Scurvy (pink pirate)  
Dead Duck (just like it says!)  
Superstar (pink w/blue stars on eyes)
 
Super Duck (yellow w/Superman "D" symbol on front)  
Lucky (green duck w/shamrock)  
Hope (pink with white ribbon on chest)  
Love Duck (white with pink heart on chest)  
Dairy Duck (cow pattern)*
Sittin' Duck (white with target on side)  
Duck Hunter (camo pattern)  
Decoy (mallard)
Gold Duck  
 
 
Feelin’ Ducky 3
 
Toxic duck (green w/bio hazard symbol)
Happy go ducky (yellow w/smiley face)
Bluesy (suit and sunglasses i.e. a Blues Brother)
Geeko (yellow w/glasses and bowtie)
(Pink) Peace duck
Holy duck (yellow w/cross)
The Dude (hot pink w/white hibiscus flower)
Screwball (looks like a baseball)
Sparkle (white and, well, sparkly)
Eco (green w/recycle symbol)
Pengo (looks like a penguin)
Unretired (white w/purple 4)
Retired (green w/yellow 4)
Stinky (looks like skunk) *there is an older one like this, not sure if they are exactly the same
Pinky (pink and blue camo)
Speedy (black w/flames)
Chocomoo (looks like cow) *there is an older one like this, not sure if they are exactly the same
Count Duckula (vampire)
 
Aaand, the ultra rare Diamond Duck!
 
 
Feelin’ Ducky 4
 
“Z” (looks like zebra)
Del tigre (looks like tiger)
F.D. (blue, w/facebook symbol)
Dweet (light blue, w/twitter symbol)
Danger (has radioactive symbol, Glow-in-the-dark)
Jolly (has skull/crossbones, Glow-in-the-dark)
Jail Bird (white w/black stripes)
State Penn (orange w/inmate #)
Duc (dressed like a medical doctor)
Elvis D. (yellow w/sideburns, thankyaverymuch)
Duck Lee (black w/yellow, assuming it’s Bruce Lee?)
Ten Pin (looks like a bowling pin)
Hope (white/light pink, w/pink ribbon)
Defender (green w/white camo, star on front)
Crazy 8 (eight ball) *there is an older one like this, not sure if they are exactly the same
Duck Mon (red/yellow/green)
Huggy (white w/xoxo)
Punch (black w/UFI)
Dunk (looks like basketball)
 
Aaand, the ultra rare Fuzzy Duck! (is this different than any of the ones pictured?)
 
 
Assuming you count both versions of the eightball, skunk, cow, and the fuzzy is a separate duck, I come up with #70 different ducks.  
 
Sweet Melissa lists/pictures #76.
I see there are 2 versions of the $ duck, with and without hair.
So, I am still missing 5 ducks on my list!
 
 

I think you missed the pink glitter, the white bullseye, the yellow bullseye, the number 2, and the number 5. The cows are different. One is black and white, the other is brown and white. The skunks look exactly the same as far as I can tell. I think the 8ball ducks are different enough to keep both versions.

Kite-thanks for the pics. I tried to post them but had problems.
Melissa, I didn't miss the bullseye ducks, I just called them target ducks.  
I will add the others, thanks!

There was also a bonus HD duckie in the last set. I was calling him a harley davidson, but i can't say for sure that's what he was intended to be.

Thanks to Kite sending me one, I do have the diamond duck. I'm pretty sure I have them all, but who knows? In the picture, it's hard to see that she is covered in glitter, but she is sitting beside the gold duck on the left.

Quote from squeakybeaks on Sep 14^th, 2011, 11:10am:

 
Squeakybeaks, if you want Diamond Duck I'm sure I have an extra around here somewhere.  
 
And I somehow managed to forget that the Harley Davidson duck wasn't in the photo of the 4th wave... again!

What do you think about these 8 ball duckies? I think they are different enough to be considered 2 different ducks.

I don't have an extra diamond duck, but I still do have all these doubles if anyone needs any.