Assessing Breeding Populations of Ducks by Ground Counts
Table 10
Table 10. Changes in five population components of mallards at five different periods on single days during laying and early incubation, Kindersley Study area, 1959.
| 0800 hours | 1300 hours | 1800 hours | |||||||||||||
| Prs. | Lone Males | Grp. Males <5 | Lone Females | Grp. birds | Prs. | Lone Males | Grp. Males <5 | Lone Females | Grp. birds | Prs. | Lone Males | Grp. Males <5 | Lone Females | Grp. birds | |
| May 11 | 61 | 53 | 53 | 1| 9:0 |
80 |
35 |
52 |
|
|
98 |
35 |
45 |
|
|
|
| May 15 | 42 | 44 | 61 | 4:1 | 55 | 45 | 58 | 5:1 | 53 | 33 | 28 | 1 | |||
| May 16 | 42 | 44 | 66 | 50 | 37 | 56 | 67 | 29 | 19 | 2 | |||||
| 0530 hours | 1530 hours | ||||||||||||||
| Prs. | Lone Males | Grp. Males <5 | Lone Females | Grp. birds | Prs. | Lone Males | Grp. Males <5 | Lone Females | Grp. birds | ||||||
| May 16 | 18 | 42 | 64 | 73 | 41 | 44 | |||||||||
| % all birds | 25 | 30 | 45 | 63 | 18 | 19 | |||||||||
| Ratio | 100: | 233: | 356 | 100: | 56: | 60 | |||||||||
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