An incomplete list of birds that rely heavily on the fruit for their diet include members of the families Cotingidae , Columbidae , Trogonidae , Turdidae , and Toucan .
Others swallow the fruit and pass the seed intact through the gut .
An incomplete list of birds that rely heavily on the fruit for Others ' diet include members of the families Cotingidae , Columbidae , Trogonidae , Turdidae , and Toucan .
Others swallow the fruit and pass the seed intact through the gut .