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Brown Rock Chat Young Began Short Flights at 17–19 Days in Sikar

Wild brown rock chat perched on a branch at IIT Delhi in India
Research: Reproduction & development, Behaviour

A field study in Sikar, Rajasthan, India, documented nesting and early development in Brown Rock Chats (Oenanthe fusca) between March and July 2026. The birds nested in inhabited buildings and built deep cup-shaped nests from materials including dry grass, hair, wool and threads from cement bags.

The observed clutch contained three pale-blue eggs laid at roughly one-day intervals. Incubation lasted about 13–15 days before the young hatched.

Rapid development during the first two weeks

The authors report especially rapid growth toward the end of the first week. By about two weeks of age, the flight feathers were fully developed and continued to lengthen as fledging approached.

The young began making short flights at around 17–19 days of age. From nest construction until the young left the nest, the full breeding cycle lasted about five to six weeks.

Feeding behaviour also included coprophagy

Brown Rock Chats are primarily insectivorous, but the study also reports coprophagous feeding—that is, consumption of faecal material. The observation adds another food type to the behaviour recorded during the study period, although the paper’s main focus was nestling growth and development.

The study provides a natural-history record from Sikar rather than a broad population analysis. Its most direct contribution is a documented timetable for egg laying, incubation, feather development and the onset of short flights under the observed conditions.

Sources and image credit

  1. Panwar, V., & Singh, B. M. (2026). Nestling behaviour and developmental stages of the Brown Rock Chat (Oenanthe fusca) in Sikar, Rajasthan, India. International Journal of Fauna and Biological Studies, 13(4), 105–108.Primary peer-reviewed article in the July 2026 issue. Two nests in Sikar were observed from March to July 2026, with one nest followed photographically from egg laying through fledging. Three eggs were laid in the closely followed nest, but only one chick hatched; it left the nest on day 18 and made short flights by days 18–19. The paper also reports female-biased nestling care, one male associated with two active nest sites and an adult feeding on Rock Dove faeces.

Image: Manish Kumar — wild Brown Rock Chat at IIT Delhi, India, 11 May 2013; Wikimedia Commons; CC BY-SA 4.0. Representative species image, not a bird from the Sikar study. · CC BY-SA 4.0 · Source

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