Table 1.
Maximum number of live adults, pups (harbor seals only), and nests (terns only) on Rat Island at the time of the outbreak as determined by aerial photographs taken on July 17, 2023.
| Counts of live animals | ||
|---|---|---|
| Species | Adults (non-pups) | Nests/Pups |
| Caspian terns | 1942 | 1,045 |
| Glaucous-winged gulls | 1,100 | |
| Harbor seals | 123 | 7 |
| Counts of dead animals | ||
|---|---|---|
| Species | Adults | Young-of-Year/Pups |
| Caspian terns | 1,101 | 520 |
| Glaucous-winged gulls | 27 | 298 |
| Harbor seals | 6 | 10 |
Total counts of dead animals collected at four time points during the active H5N1 HPAIV outbreak and two time points post-outbreak. For harbor seals, numbers include stranded animals from the immediate surrounding area (Fort Flagler and Indian Island).