11. Ecology and management of GREY PARTRIDGE: distribution, ecological characteristics, and economic/hunting role Flashcards
Distribution and Introduced
D: Native to Hungary and, breeds in farmlands across most of Europe
I: Canada, US, South Africa, Australia, New Zealand.
Status
Greatly Declined
Habitat
Home range woody plains, forest belts, grassland, agricultural fields, extensively cultivated grounds
Nesting place: ridges, borderlands, side of ditches, side of channels, edge of forest, edge of arable field.
Description
Description: Brown/orange head, grey, blue flanks and chest, brown speckled back, light belly. Horseshoe shaped patch on the belly (absent or smaller on females). Modest sexual dysmorphism.
Length: 28-32 cm.
Weight: 300-400 g.
Diet
Diet: polyphagy, seasonally: insects, green vegetables, seeds
Adults eat mostly plant foods
Chicks eat insects in the first 3 weeks of life animal protein provides better body size and feather development
They are the most important consumers of weeds and insects
Reproduction
Monogamous, lifelong.
During the winter coveys disintegrate and birds fly to neighbouring coveys where couples will be formed
After pairs are formed, couples occupy nesting areas
Brood: 12-15 eggs. Incubation lasts 24 days and cocks guard the hens and nest.
They have strong rearing instincts. Maturation occurs at 12-14 weeks, but they can fly from 3 weeks old
Family stays together through winter, until next spring
Behaviour
Flies with whirring wings and occasional glides, showing a chestnut tail. It is strictly a ground bird, never likely to be found in pear trees! Groups of 6-15 (known as coveys) are most usually seen outside the breeding season.
Hunting
Wild population cannot be hunted, only released birds can be. It’s a popular game species
Game bird in Hungary, the hunting bag was 2428 in 2015.
*The hunting season: 1 October – 31 December
*It can be hunted with permission, where at least 500 birds were released and max. 40 % of the released amount!
Management
During winter and spring supplementary feeding is needed
Population has declined under critical density (under 2 individuals/km2
- Habitat degradation: disappearance of edges and ditches, lack of insects for chicks and sensitivity to climate
- Insufficient habitat improvement
- Insufficient killing/control of predators
- Passive protection (ban of hunting) has failed
Management:
- Provide suitable habitat from beginning
- Provide adequate supply of high-quality nesting place
- Reduce chick mortality
- Reduce nest losses (predators)
- Use should not exceed optimal sustainable yield
- Supplementary feeding only in cases of unfavourable winter
- Release or repatriation is not recommended