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Woodland Index for Jerdon’s Baza Fell 4.4% Per Year While National Trend Remained Unresolved

Jerdon's baza perched in a tree in West Bengal, India
Conservation · Population & status

The 2025 interim update to State of India’s Birds, released on 6 May 2026, estimated a recent decline in the abundance index for Jerdon’s baza (Aviceda jerdoni) within the woodland habitat dataset. The current annual trend was −4.4% per year, and the updated numerical estimate clearly supported a decline in the woodland dataset.

The woodland dataset provides a recent annual estimate but no long-term trend for the species. In the separate national dataset, both trend estimates remain unavailable because of insufficient data.

State of India’s Birds classifies Jerdon’s baza as a resident forest-associated species in India. Its estimated national distribution range is 204,263 km², and its conservation priority remains Low.

The update used about 48 million eBird observations available through 31 May 2025 to recalculate numerical estimates for 942 species. The trend values describe change in a reporting-based abundance index rather than direct counts of individual birds. The trend and range-size categories from the 2023 assessment were retained, including the woodland annual-trend category “Trend Inconclusive” for Jerdon’s baza.

Sources and image credit

  1. State of India’s Birds Partnership. (2026). State of India’s Birds: Range, trends, and conservation status – 2025 interim update (Version 2) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.20036633

Image: Tisha Mukherjee — wild Jerdon’s Baza photographed at Kurseong, West Bengal, India, 25 April 2025; Wikimedia Commons; representative species image; cropped to 16:9 · CC BY-SA 4.0 · Source

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