1. Climate Change
1.1. Affects their migration patterns and ranges
1.1.1. Confuses them due to the untimely natural signals that indicate the right times for nesting and breeding
1.1.2. Habitats are threatened as grasslands become extensively burnt
2. Habitat Destruction + Invasive Species + Population
2.1. Increase in humans, agricultural expansion, infrastructure, disturbance, the grazing of livestock and invasive plant species
2.1.1. Loss of grassland and wetland habitats
2.1.1.1. Use altered landscapes for nesting, which disrupts their natural behavioural patterns
2.1.1.2. Regular collisions with power lines and farming infrastructure like fencing, bailing twine and water troughs
2.1.1.2.1. Around 12% of blue cranes get killed by power line collisions every year
3. Pollution
3.1. Misuse of agrochemicals e.g. pesticides, fertilizer
3.1.1. Leads to poisonings in the Blue Cranes, which could kill 50-500 birds at once
3.1.1.1. Deliberate (to protect crops from being fed on)
3.1.1.2. Accidental (when bait is placed to catch other species or as a side effect of crop dusting, which involves an agricultural aircraft spraying crops with crop protection products