ROGGEN, Colo. (CBS4) – Investigators still don’t know what started an intense fire that caused millions of dollars of damage to a chicken egg farm near Roggen.

It’s been so hot investigators haven’t been able to get close enough to search for clues.

Firefighters say about 500,000 chickens died in the fire at the Boulder Valley Poultry farm. That equals a loss of about 250,000 eggs a day. That’s about half of the farm’s total production.

The fire damaged three of nine buildings at the farm.

Boulder Valley Poultry farm provides about 1/4th of Colorado’s egg supply. The farm provides eggs for King Soopers and Sam’s Clubs, but King Soopers said the fire shouldn’t have an impact on supply or price in the short term.

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