As a biologist, I have read with interest your articles covering environmental issues, which are generally well-written, though frequently contain minor errors.
For example, the article "Buildup on Coastal Sands a Take-Care Operation" (Nov. 19) states that construction workers are attempting to avoid "nests of the least tern."
Note that the least tern nests here from April to August and migrates southward thereafter. A least tern nest is merely a depression in the sand; no nests are currently present. Workers are merely trying to avoid the designated, protected "nesting area" at this point.
KATHY KEANE, Costa Mesa