Suleiman Mountainous Region (SMR) is part of the dry land ecosystem of Pakistan. SMR receives a precipitation of 200-350 mm/anum. Rain fed agriculture makes the major part of crops like wheat and corn. In rain fed areas, mostly local indigenous verities of wheat and other crops are used for cultivation.
In the climate change scenario, the large sized crow are not coming as migrant birds in the region. Also the precipitation amount decreased or the pattern and time of rains changed.
This year because of very limited rains, an insect locally known as green tick attacked on the roots of the wheat crop. Such insect usually attack in the dry years when rains are minimal and the roots are still easy to access by these insects. In the previous times there had been the presence of a lot of large black crows flocks, which had been eating such ticks. Now that biological source of insect control is diminished because of the effects of climate change.
I can concluded that the blind use of pesticides and other human activities might be the reason of the crows elimination for the region. Also the deforestation and other global drivers effected the rain pattern very badly.
In the context of the above phenomenon the goal of food security is a further hard challenge to beat by the countries like Pakistan in coming years.