Individual study: Hand-reared gray partridges Perdix perdix take-off at a lower angle and slower speed than wild-caught birds in an ex situ experiment
Putaala A., Oksa J., Rintamaki H. & Hissa R. (1997) Effects of Hand-Rearing and Radiotransmitters on Flight of Gray Partridge. The Journal of Wildlife Management, 61, 1345-1351
This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.
Artificially incubate and hand-rear gamebirds in captivity
A replicated ex situ study in 1993 and 1994 in Finland (Putaala et al. 1997) found that hand-reared grey partridges Perdix perdix took flight with a shallower take off angle (average of 31o tested on 12 birds) and climbed more slowly (climbing rate of 1.8 m/s for 11 birds) than wild-caught birds (average 44o for 19 birds tested and 2.7 m/s for 18 birds), potentially making them more vulnerable to predation from ground predators.