[2] Black-chested prinias make a loud, repeated "chip-chip-chip" call as well as a buzzy sequence of "zrrrt-zrrrt-zrrrt" sounds.

[3] They experience three distinct seasons within their subtropical climate range:[3] Along with Acacia habitats, Olea-Buddleia vegetation (within the Cymbopogon-Themeda grassveld) is important in the nesting and feeding habits of black-chested prinia.

[5] Beetle and weevil larvae, as well as adult flies, comprised much of the birds' stomach contents in Kopij's study.

[5] Black-chested prinias have also been observed probing unopened Aloe marlothii flowers in South Africa during the winter season.

[8] One to two parasitic weaver chicks per clutch have been found to be raised by black-chested prinia parental hosts in Acacia habitats near grasslands.

[9] Herremans found that black-chested prinias expand their range during severe droughts, becoming a bit nomadic in order to adapt to challenging environmental conditions.

[9] Kopij noticed a seasonal decrease in the local populations of black-chested prinias in "inselbergs" (bushy isolated hills within dry grasslands) .