A pair of Crested treeswift with its egg [Image credits: Aditya Pal / CC BY-SA 4.0]
Mathematical models show that males should be selected to care more for their offspring rather than desert them.
The study from IISc found a previously unidentified yeast-like symbiont inside the lac insect Kerria lacca, which gives the insect its distinctive red colour and, may also provide other nutrients in return for shelter.