Little information. Mees reported a nest in the crown "of a tall tree" in Suriname; the nest was constructed of twigs (Haverschmidt and Mees 1994). Bosque and Molina (2002) presented more detailed information on two nests from Venezuela. One nest was in a fork about 5 m above the ground in a large tree overhanging a river. The second nest was 3.6 m above the ground in a mango tree at the edge of a Native American settlement. Both nests were cup shaped and made of twigs with no lining. Four eggs were observed in the second nest. These averaged 29.9 mm (SD ± 0.9 mm) in length and 23.4 mm (SD ± 0.1 mm) in width. Their average weight was 8.4 g (SD ± 0.3 g). The eggs were white with blotchy brownish grayish spots (Bosque and Molina 2002).
The Cayenne Jay is a cooperative breeder with a minimum of three individuals providing food to nestlings (Bosque and Molina 2002) for nestlings. Additionally, four birds participated in mobbing behavior at a nest directed at a perceived predator (see Predation).
Nests in Suriname were encountered in May (Haverschmidt and Mees 1994), and in Venezuela in April (Bosque and Molina 2002). Hilty (2003) gives January-March as the breeding season in Venezuela.