Ekek (or Ek Ek) are bird-like human creatures in Philippine mythology.
They are usually described by old folks as flying creatures that look like the Manananggal but are unable to divide or split their body. Apart from the Manananggal, they are also associated to the Wak Wak because of some similar characteristics. The only difference between a Wak Wak and Ekek is that Ekek has a bill like birds whereas the Wak Wak has none.
The Ekek used their wings in looking for victims during night time. They crave for flesh and blood.
At night, the Ekek can take the form of a huge bird or bat. It usually searchs for sleeping pregnant women. Then, it extends its long proboscis to the womb and kills the fetus inside by draining its blood. Witness reported that the Ekek killing is accompanied by a "ek-ek-ek" sound. It tricked people into the idea that it is far by having a faint sound when it is actually near.