RIR Egg Size

[jthornton]

Yes, they were... Definitely adult birds. No idea of their age but their egg size is consistent and unique to the bird!

Very interesting for sure.

JT

 

[jthornton]

For those that wonder about the distribution of egg size for the last few months some charts:
May


June

July


August to date


JT

 

[jthornton]

I added the weekly average high temperatures to a graph and if temperature is the reason the data sure does look that way. Interesting that I've only had 3 days this month that the egg size averaged medium, the rest are large. In July I only had 8 of 31 days where the egg size average was large.



JT

 

[jthornton]

August was an interesting month for egg size, only 3 days out of 31 averaged medium. As compared with July with 23 days averaging medium. Quite a switch.

As usual some charts
The weekly percent laying and egg size with average temperatures.


The August bar chart of size


And the August chart of egg size by gram


JT

 

[Ridgerunner]

Seems the older they get the more the bell curve shape comes in with the size chart especially. The peak is much better defined.

Hope you keep this up. It will be interesting to see what happens when they molt, how soon they come back into lay, and what changes might occur after they molt.

 

[jthornton]

And the charts for September 2018.







JT

 

[jthornton]

Here are the results from October 2018, starting next month there are only 8 hens laying as I gave one a new zip code... well only 7 lay, Sweet Pea does not lay one very often.







JT

 

[aart]

These are all pullets, correct...and are you using supplemental lighting??

What's the bottom graph on the first diagram?

 

[jthornton]

No, they are 15 months old this month. I stopped using supplemental lighting in mid September and ramped down to natural daylight.

The bottom graph is the approximate amount of daylight they get each week.

The lighting schedule now is:

Coop Door/Light with added light based on the following schedule:

Summer and Fall
If natural daylight is more than 10h and decreasing
    Open door and turn on lights at dawn

Winter
If natural daylight is less than 10h and decreasing
    Find the last date of 10h daylight
        Add 5 minutes per day from that date

Spring
If natural daylight is less than 10h and increasing
    Find the last date of 10h of daylight with daylight decreasing
        Add 5 minutes per day from that date

All Seasons
Turn off lights 2 hours after sunrise
Close door at dusk

Of course all the above is done with the magic of the Python astral library and some cool programming.

JT

 

[aart]

Winter If natural daylight is less than 10h and decreasing Find the last date of 10h daylight Add 5 minutes per day from that date

Maybe I'm reading this wrong, but looks as if they have more than 'natural' light?
Any molting going on yet?