Eric travels to Brazil to investigate the death of F.X. Caldeira, whom he later finds out is still alive. He mails Jen five postcards that contain codes from varying locations in Brazil about his whereabouts and the progress of his investigation.
The first postcard is found between pages 112-113, dated April 12. Eric Husch begins using the idea of birdwatching as a metaphor for his search for F.X. Caldeira. The post script advises the reader to destroy the postcard after reading.
The second postcard is found between pages 178-179, dated April 15. Eric Husch had made progress in his research, saying, “People here say they saw the nightingale, but don't remember specifics, not even where she nested.” Eric Husch's bird watching code indicates that he had found people who know of F.X. Caldeira and he was getting closer to finding her.
The fourth postcard is found between pages 192-193, dated April 19. Eric Husch had found a family who knew of a “very old nightingale” and said that people are protective of her. They believed Eric Husch had good intentions with his book and offered to take him to see the old nightingale the next day.
During his time in the country, he meets Filomela and asks her several questions about Straka while informing her of his and Jen's work with his novels. She tells Eric that Tiago García Ferrara visited her in New York in 1946 desperately seeking Straka, though she did not know of his whereabouts.1)