SAFRING results
Grey Lourie Corythaixoides concolor
Ringing data entered by Robert Thomson (14 February 2003)
1. Numbers ringed with SAFRING rings, 1948-2001
- Total ringed: 215
- First ringed: 1954/55 ringing year
- Trapping method: Mistnets, nestlings, Rehabilitatees
Number of Grey Louries ringed per year with SAFRING rings
Note that a total of 7 (average 1.75 per year) were ringed in the period 1970-73; the individual year totals are not known.
2. Computerised records, 1975-2001
- Number of records: 196
- Ring sizes used: 59 with 6 mm, 31 with 7 mm, 105 with 8 mm, 1 with 634-prefix rings
- Recommended ring size: 6 or 8 mm Aluminium Alloy
- Top ringers: 59 ringers; top 7 ringers: Mrs M Van Loggerenberg (19), Mr R Geyser (10), Mr A Nel (9), Mr W de Klerk (9), Dr H & Z Bernitz (8), Mr D Heinrich (8), Prof H Bouwman (8)
- Bird age distribution: Unknown (9), Nestling (12), Juvenile (8), Immature (4), Adult (160), 0-6 months (3)
- Bird sex distribution: Unknown (184), Male (3), Female (2), Possibly male (2), Possibly female (5)
- Markings: Metal only (195), Metal plus colour rings (1)
- Condition: Good (183), Rehabilitated (9), Artificially reared (4)
- Birds ringed per region:
| Locality | n |
| Gauteng, South Africa | 79 |
| Limpopo Province, South Africa | 52 |
| Northwest Province, South Africa | 40 |
| Namibia | 15 |
| Botswana | 9 |
| Zimbabwe | 4 |
| Mpumulanga, South Africa | 1 |
Map of localities where Grey Louries have been ringed, 1975-2001
3. Biometrics and moult
Mass data (g) for Grey Louries
| Age | n | Min | Mean | Max |
| Adult | 139 | 147 | 258.4 | 350 |
Wing length (mm) for Grey Louries
| Age | n | Min | Mean | Max |
| Adult | 71 | 172 | 215.5 | 230 |
More biometric data in Rowan (1983, p228).
Moult data
Nine adults showed active primary moult in December, February, April, May and June. See also Rowan (1983, p205)
4. Recovery history (SAFRING's database)
- Number of recoveries: 5 recoveries and 2 recaptures
- Greatest distance: 15 km (669763)
- Greatest elapsed time: 8y 10m 18d (669763)
- Causes of mortality of ringed birds: Caught by genet (592009), killed by predator (63405882), sick (672924), rest unknown.
5. Ringing references
- Rowan, MK. 1983. The doves, parrots, louries and cuckoos of southern Africa. Cape Town: David Philip.
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