Even birds get something out of organic animal farms, says research
(Natural News) Organic farms not only produce healthy foods – they increase bird populations as well, a recent study finds. Researchers from the University of Helsinki in Finland found that organic animal farms are the most effective measures to reverse the decreasing bird numbers in Europe. The study, which was published in PLOS ONE, highlighted the importance of birds on farms and agriculture.
Bird populations have a crucial role in a farm’s ecosystem. They help manage pests by preying on insects and aiding cross-pollination in the process. In fact, high bird numbers are one of the indicators of a healthy farm.
However, conventional farming methods have decreased their numbers due to a variety of reasons, such as the use of chemical pesticides and herbicides. These indiscriminately kill all insects, depriving the birds of food. The lack of food forces the birds to check other places and pastures for a richer source of food. Aside from this, there is oversimplification of land usage – which focuses on food production rather than biodiversity – and increasing mechanization.
Decreasing bird populations have reached such alarming rates that even the common swallow and house martin were declared endangered species in Finland. To counter the effects of these farming methods on biodiversity, the European Union implemented a subsidy system.
Promoting biodiversity on farms
The agri-environment-climate (AEC) subsidies are meant to compensate farmers who implement measures that benefit the environment. These measures include organic farming and encouraging biodiversity on their farms.
AECs subsidize a wide range of farming practices, but there is a lack of research conducted on them. The researchers of this study were particularly interested in which farming method was most effective.
For information on bird populations, they used the data collected from 2008 to 2013 through a standardized citizen science program – a long-term project that has been monitoring bird populations in Finland for over 40 years.
To gather information on farming methods, they analyzed the records on AEC and land-use practices in an online database. The data was collected and managed by the Agency for Rural Affairs in Finland.
The researchers found that organic animal farming contributed to a significant rise in bird abundance. In particular, there was an increase in populations of insectivorous birds. Compared to organic farms that only focused on crops, the effects of organic animal farming on bird populations had twice the positive effect. Their findings suggested that animals, particularly livestock, are crucial to increasing bird numbers.
The idea is logical. Most of the organic animal farms are cattle farms, where cattle or other livestock could graze in pastures during summer months. Insects flock around the rich manure of the cattle, due to eating complex vegetation. Consequently, as the numbers of insects increase, so do the numbers of birds on the farm. (Related: Organic farming found to eliminate plant parasites longer than conventional chemical pesticides.)
The researchers suggested that the AEC subsidies should be allocated to farms that help promote biodiversity. They believe that increasing the share of organic animal farms will further improve bird populations in the country.