CLBS - What does CLBS stand for? The Free Dictionary
References in periodicals archive
Since the White-throated Sparrow project at CLBS began in 1988, more than 200 eggs have been collected and over 1800 chicks have been documented hatching with no confirmed occurrence of twinning.
These conditions are not outside those normally experienced at CLBS and they are much warmer than the temperatures that were shown to affect twinning rates in those other species.
The cause of death of these eggs has not yet been studied at CLBS.