https://jad.lu.ac.ir/ Journal of Animal Diversity en daily 1 Mon, 01 Sep 2025 00:00:00 +0330 Mon, 01 Sep 2025 00:00:00 +0330 https://jad.lu.ac.ir/article_734389.html Avian assemblages serve as sensitive bioindicators of habitat quality and ecological resilience, particularly within anthropogenic landscapes such as institutional campuses. The present study conducted a comprehensive diversity assessment of avifauna in Rangia College Campus, Assam, India, from August, 2024 to July, 2025 to evaluate species composition, trophic guild structure, habitat preferences, and conservation status. Standardized line transects and point count methods were employed across four habitat types, and community parameters were quantified using Shannon–Wiener, Simpson, Margalef, Berger–Parker, and Pielou’s indices. A total of 54 species across 43 genera, 32 families and 12 orders were recorded, of which Leptoptilos javanicus (Vulnerable) was of global conservation concern. Insectivores dominated the trophic structure (31.48%), and habitat analysis revealed maximum richness and diversity within tree-dominated patches (HT-1). Diversity indices indicated marked variation across habitats, with HT-1 exhibiting the highest Shannon diversity (H′= 2.685) and HT-3 (Open areas like rooftops, playgrounds, fields and roadsides) the lowest (H′= 2.001). These findings demonstrate that structurally heterogeneous, vegetation-rich habitats act as micro-refugia sustaining both common and threatened taxa within an urban–educational matrix. The study provides a robust baseline inventory, elucidates the role of microhabitat heterogeneity in shaping avian communities, and highlights the need for biodiversity-sensitive campus management in rapidly urbanizing regions of Assam. https://jad.lu.ac.ir/article_734469.html Butterflies are holometabolous insects in which for larval development, females deposit their eggs on suitable host plants. However, females may not always choose the best host, and new larvae may reject the plant they are hatched on and need to locate a better host plant for survival. Occasionally a butterfly turns down a preferred plant as its larval host plant and then may accept a new host plant of the same family or from a different family. An opportunistic survey was done to report Ziziphus nummularia (Burman.f. Wight and Arnott., 1833) (Rhamnaceae) as a newly identified larval host plant for Cigaritis lohita (Horsfield, 1829) (Lycaenidae). Additionally, Polycarpon prostratum (Forssk. Asch. and Schweinf, 1889) (Caryophyllaceae) is recognized as a new larval host plant for Zizeeria karsandra (Moore, 1865) (Lycaenidae). Furthermore, Pithecellobium dulce (Roxb. Benth., 1844) (Fabaceae) and Albizia lebbeck (Linnaeus and Benth, 1844) (Fabaceae) are documented as new larval host plants for Rapala manea (Hewitson, 1863) (Lycaenidae).