Conservation Evidence: Evidence Data

Collected Evidence: Collected Evidence: Artificially incubate and hand-rear seabirds in captivity Five studies from across the world found evidence for the success of hand-rearing seabirds. One small study in Spain found that one of five hand-reared Audouin’s gulls Larus audouinii successfully bred in the wild. Four studies found that various petrel species (Procellariiformes) successfully fledged after hand-rearing. One controlled study found that fledging rates of hand-reared birds was similar to parent-reared birds, although a study on a single bird found that the chick fledged at a lower weight and later than parent-reared chicks. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F604https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F604Sat, 13 Oct 2012 16:50:42 +0100Collected Evidence: Collected Evidence: Artificially incubate and hand-rear raptors in captivity Six studies from across the world found high success rates for artificial incubation and hand-rearing of raptors. A replicated and controlled study from France found that artificially incubated raptor eggs had significantly lower hatching success than parent-incubated eggs. This study found that fledging success for hand-reared chicks was similar to wild chicks, whilst a replicated and controlled study from Canada found that hand-reared chicks had slower growth and attained a lower weight than parent-reared birds. A replicated study from Mauritius found that hand-rearing of wild eggs had higher success than hand-rearing captive-bred chicks. Three studies that provided methodological comparisons found that American kestrel Falco sparverius eggs were more likely to hatch at 38.5oC, compared to 36oC or 40oC, that peregrine falcon F. peregrinus eggs should be incubated over 37oC and that falcon chicks gained far more weight when saline was added to their diet. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F614https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F614Sun, 14 Oct 2012 12:05:10 +0100