The intact C-32-C-48 diester wax esters of the preen gland of the migrating
bird Calidris canutus are shown, using synthesized standards, to comprise
predominantly C-12-C-16 alkane-1,2-diols esterified with octanoic, decanoic
, and dodecanoic acid at one position, and with predominantly even-numbered
carbon fatty acids at the other position.