| avian carcinoma mill hill virus 2 | species | viruses and viroids | viruses | species | 11870 |
| avian endogenous retrovirus eav-hp | no rank | viruses and viroids | viruses | species | 93465 |
| avian endogenous virus ev-1 | no rank | viruses and viroids | viruses | no rank | 11859 |
| avian endogenous virus ev-21 | no rank | viruses and viroids | viruses | species | 12645 |
| avian erythroblastosis virus | no rank | viruses and viroids | viruses | no rank | 11861 |
| avian erythroblastosis virus e26 | no rank | viruses and viroids | viruses | no rank | 31920 |
| avian leukemia virus | no rank | viruses and viroids | viruses | no rank | 11946 |
| avian leukosis and sarcoma virus | no rank | | | no rank | 1806567 |
| avian leukosis virus | species | viruses and viroids | viruses | species | 11864 |
| avian leukosis virus - rsa | no rank | viruses and viroids | viruses | no rank | 363745 |