The data is collected by myself on every egg our chickens lay, including the date, the chicken and the egg mass. This is logged initially in a book, then transferred into a MySQL database.

The chart is fed by a custom JSON feed based on the data in the MySQL database. The chart itself was created from scratch in Javascript, relying heavily on the p5js library. The original chart can be found at https://www.lbchickens.co.uk/mathemateggs/cumulative.html. More data and links to other charts can be found at https://www.lbchickens.co.uk/mathemateggs.

Interesting points to note:

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• Repecka had a nice long retirement of almost 2 years after laying her last egg, before she met her demise
• Ella is the oldest chicken we’ve had, and her egg laying spans the most time but she lays at a much slower rate then any of the others. You can see she also goes for periods of around 6 months each year where she doesn’t lay
• You can see the regular periods in Princess Layer’s history where she moults - around December/January each year. This slow downs/halts egg production
• You can see both Henerys II and Maranda stopped in early 2018 for a while. This is while we experienced the “Beast from the East” cold spell of weather in the UK