Update README.md

README.md

@@ -59,6 +59,17 @@ test_usa_summer = load_dataset("cathv/batis_benchmark_2025", name="USA_Summer",
 The code to reproduce the experiments presented in the paper is available in our [GitHub repository](https://github.com/cath34/batis_benchmark_neurips_2025). Please note that the checklists data is **NOT AVAILABLE** in this current repository, in order to comply with the [eBird Data Access Terms of Use
 ](https://www.birds.cornell.edu/home/ebird-data-access-terms-of-use/). If you are interested in downloading the checklists data, please formulate a [request for access](https://support.ebird.org/en/support/solutions/articles/48000838205-download-ebird-data) to the eBird team. 
 
+## !!! ERRATUM IN THE MAIN PAPER !! 
+
+There in an erratum in the main paper. We would like to apologize to the reviewers for a typo in Table 1 of the main paper. The table incorrectly suggests that hundreds of thousands of species can be observed in the United States during summer, and nearly 50,000 in winter. While many birders would surely dream of such an extraordinary high avian biodiversity, these numbers are clearly far from the reality. The values intended for the `number_of_hotspots` column were unfortunately placed in the `number_of_species` column. The first table of the Appendix reports the appropriate numbers, but we also include it here to avoid any confusion : 
+
+| **Region**           | **Date Range**              | **Number of Checklists** | **Number of Hotspots** | **Number of Species** | **Species List** |
+|----------------------|-----------------------------|---------------------------|-------------------------|------------------------|------------------|
+| Kenya (KE)           | 2010-01-01 to 2023-12-31    | 44,852                    | 8,551                   | 1,054                  | Avibase          |
+| South Africa (ZA)    | 2018-01-01 to 2024-06-17    | 498,867                   | 6,643                   | 755                    | BirdLife         |
+| USA-Winter (US-W)    | 2022-12-01 to 2023-01-31    | 3,673,742                 | 45,882                  | 670                    | ABA 1-2          |
+| USA-Summer (US-S)    | 2022-06-01 to 2022-07-31    | 3,920,846                 | 98,443                  | 670                    | ABA 1-2          |
+
 ## Dataset Configurations and Splits
 
 The dataset contains the following four configurations :