Chris,
Can you add this to the publication list, please:
2010. Salcedo, C. Environmental elements involved in communal roosting in Heliconius butterflies (Lepidoptera: Nymphalidae). Environ Entomol. 39(3): 907-11.
2010. Salcedo, C. Evidence of pollen digestion at nocturnal aggregations of Heliconius sara in Costa Rica (Lepidoptera: Nymphalidae). Tropical Lepidoptera. 20 (1): 35-37.
Saludos,
Christian