I have 2 mallards why is one shaped so weirdly

[Mckaykay]

This is my 2nd time to have mallards the 1st time I only had 1 which was a boy. This time I have 2 and have noticed one is drastically different in shape

 

[JedJackson]

The large one is probably a Rouen. The smaller one looks like a normal mallard. You probably already know the dark, upright one is a runner duck.

 

[HollowOfWisps]

One is a Rouen and one is a mallard. Mallards have a smaller compact body weigh typically 2-3lbs and their tail tends to be in line with the body. Rouens stand taller weighing in around 6-8lbs and tails tend to swoop more. Both the same color, but very different breeds.

 

[Crazy Maizie]

@AstroDuck
@Quatie

I'm not familiar with rouens, but they both look the same size. So I'm guessing both rouens and one just has a weird stance. Tagged a few people who might be able to help.

 

[HollowOfWisps]

@AstroDuck , I am terrible with the difference between the two, but isn't there something about facial marking? Or is that only seen in the ducklings? The one vs two eye stripes?

Oh yes thank you for the reminder. Rouens have two stripes and mallards have one. However, it isn't a 100% indicator as some rouens have mismarked stripes especially hatchery quality. A rouens second stripe might be very minimal or broken where it starts then stops.

Note: This Rouen has an exhibition body shape not the standard Hatchery quality body shape. However, you can see her very minimal second stripe.

Here is a picture of my old Rouen who was hatchery stock:

And my old Mallard:

You can see the differences in conformation and stature.

Note: the first two pictures are not mine just from Google.

 

[JacinLarkwell]

The black looks like a runner duck

 

[Aunt Angus]

Is one a Rouen, maybe?

 

[Quatie]

One is a Rouen and one is a mallard. Mallards have a smaller compact body weigh typically 2-3lbs and their tail tends to be in line with the body. Rouens stand taller weighing in around 6-8lbs and tails tend to swoop more. Both the same color, but very different breeds.

@AstroDuck , I am terrible with the difference between the two, but isn't there something about facial marking? Or is that only seen in the ducklings? The one vs two eye stripes?

 

[raingarden]

Somebody messed up. Runners are fun, it's not what you want breeding with your mallards.

 

[Egg Snatcher]

Runner duck