| ▲ | hlynurd 2 hours ago | |
Did they adjust for demographics? | ||
| ▲ | trollbridge an hour ago | parent [-] | |
Yes. The study was from a uniform sample of people and then they installed bird feeders. | ||
| ▲ | hlynurd 2 hours ago | |
Did they adjust for demographics? | ||
| ▲ | trollbridge an hour ago | parent [-] | |
Yes. The study was from a uniform sample of people and then they installed bird feeders. | ||