Some birds like to live in groups with one another. This may be due to the similar food habits of some different birds. Other reasons may be similar nesting patterns. I have observed that in the river beds which is full of brownish sand and assorted sized pebbles birds like Paddy Field Pipits, Crested Larks and Ashy Crowned Sparrow Larks cohabit. One more reason seems to be that their colours match the sand of the bed creating a perfect camouflage.
One day we found together Ashy crowned Sparrow Larks , crested Larks and pipits forage together in the Ghaggar river bed perhaps they are terrestrial birds. I could take a photo of Juvenile Ashy Crowned Sparrow Lark ( in Front) and Paddyfield Pipit in the back in the Ghaggar River passing near Panchkula city of Haryana in India.
Savanna Nightjar (Caprimulgus affinis) is an Bird which is found in South East India. While on a spotting mission in our area, I was moving about in Ghaggar River in Panchkula. It was in the June month, scorching heat and dry. Bed of the river is almost dry- full of sand and pebbles.
I was just descending a raised bank through the pebbles when three of them flew just from my feet. They are master of camouflage. You will not be able to spot them sitting in the scrub and pebbles until you are looking elsewhere and it suddenly flies from before your feet. But it does not fly very high and sits at other nearby place.
It is a rarity in my area and I hope I was the first to spot them.kkk
I returned to the area many days after that to check whether they are staying here and found them there.