It's a sight that has become some sort of attraction in Calinan, Davao City: flocks of birds perched on electric cables, window grills of houses, rooftops and other structures.
Experts from the Department of Environment and Natural Resources (DENR) are studying if these birds are swiftlets which can be found here in the Philippines, or starlings which are migratory birds commonly found in Russia.
Experts say extreme temperatures and lack of food force some birds to migrate to other locations.
Residents of Villafuerte and Magsaysay Streets have not experienced major problems, except for the bird droppings on the streets.
The DENR warns the public not to kill or harm the birds. Those who will do so will face charges for violating Republic Act 9147 or Wildlife Resource Conservation and Protection Act. -- With a report from Hernel Tocmo, ABS-CBN Davao