From: When do young birds disperse? Tests from studies of golden eagles in Scotland
Method | Description | Reference |
---|---|---|
1 | First day beyond circular parental territory radius (half the mean nearest neighbour distance) – 2.9 km | |
2 | First day beyond the mean nearest neighbour distance – 5.8 km | |
3 | First day over 20Â km from natal nest | |
4 | First day beyond circular parental territory radius (half the inter-nest distance) and not within that distance for 2 consecutive locations | |
5 | First day beyond the mean inter-nest distance and not within that distance for 2 consecutive locations | |
6 | All locations over the mean distance to nest | [10] |
7 | First day beyond maximum ranging distance (9Â km) and not within usual range (6Â km) for the following 10Â days | This study |
8 | Highest coefficient of variation over a 3 record period | |
9 | Highest coefficient of variation over a 5 record period | |
10 | Highest coefficient of variation over a 10 record | |
11 | Highest coefficient of variation over a 30Â day period | |
12 | Maximum change in proportion of locations inside natal home range (-30Â days: +30Â days ) | This study |