| Raptor | Arceuthobium | Location | Abundance* | Reference |
|---|---|---|---|---|
| Northern spotted owl | A. spp. | OR | 3 of 18 nests in brooms | Forsman 1983 |
| A. spp. | OR | 9 of 47 nests in brooms | Forsman and others 1984 | |
| A. douglasii | WA | 3 of 3 nests in brooms | Richards 1989 | |
| A. douglasii | WA | 11 of 29 nests in brooms | Irwin and others 1989 | |
| Mexican spotted owl | A. douglasii | NM | 1 of 3 nests in brooms | Ligon 1926 |
| A. douglasii | NM | 2 of 6 nests in brooms | Pederson 1989 | |
| A. douglasii | AZ, NM | 7 of 22 nests in brooms | Fletcher 1990 | |
| Great gray owl | A. douglasii | OR | 10 of 49 nests in brooms | Bull and Henjum 1990 |
| Long-eared owl | A. douglasii | OR | 19 of 20 nests in brooms | Bull and others 1988 |
| Great horned owl | A. vaginatum | CO | 1 nest in broom | Reynolds, personal communication 1990 |
| Cooper's hawk | A. spp. | OR | "common" in brooms | Reynolds 1979 Reynolds and others 1982 |
| A. douglasii | OR | 20 of 31 nests in brooms | Moore and Henny 1983 | |
| A. douglasii | OR | 50-70% of nests in brooms | Moore and Henny 1984 | |
| Goshawk | A. douglasii | OR | 5 of 34 nests in brooms | Moore and Henny 1983 |
| Sharp-shinned hawk | A. douglasii | OR | 3 of 25 nests in brooms | Moore and Henny 1983, 1984 |
| *Relative abundance of nests for the raptor species that were found in witches' brooms. | ||||