How many eggs on average does the average White Leghorn chicken lay in a year?

Leghorns are good layers of white eggs, laying an average of 280 per year and sometimes reaching 300-320.[1] They have a good feed-to-egg conversion ratio, needing around 125 grams per day of feed. Leghorns rarely exhibit broodiness and are thus well suited for uninterrupted egg laying. The Leghorn is a light breed that matures quickly; it is not considered a viable meat producer. Leghorns are active and efficient foragers. They typically avoid human contact and tend to be nervous and flighty.

Due to their prolific egg-laying, they are preferred by laboratories for embryonic and avian biological research as well as being the number one breed used for large-scale commercial egg production in the United States.