[17AndCounting]

We have been given some chickens to add to our small flock. One of them lays massive eggs. I can't work out which one, but todays egg weighed 111g and looks somewhat similar to a goose egg! To start with I thought it was because they'd been moved, a kind of 'egg backlog' because they didn't lay for a couple of days. However it keeps happening.

They seem fine, they peck and chat, they seem to have kind of settled with our other birds. They are on exactly the same food as before but I also give them a seeweed supplement. They get some fruit and veg etc as well.

Any ideas what is causing this and whether it's a problem?

[sokel]

We have a 2yr old normal brown hen who always lays extra large eggs every day. They are double yolked .

[SallyintNorth]

I just posted about this on another thread.  IME, overlarge / double yolk eggs are due to eating more pellets than are necessary.  There's a lot more in similar vein in the quoted post.

I had one greedy bird couldn't help herself  - so I switched to a pellet they didn't like so much and that sorted her overeating out!     (Wish someone could do this for me  )

[HesterF]

I had some double yolkers earlier in the season when their systems were kicking in. They were 100g ish but long and thin rather than being like a proportional big egg  - you could sort of spot them as a double yolker. Mind you, I did mistake a duck double yolker for my first goose egg. How old is your hen?