Abstract
Urban environments impose novel selective pressures on wildlife populations that differ fundamentally from the
ecological conditions under which species evolved, including elevated noise and light levels, altered food resource
distributions, high human density, and fragmented habitat patches. Animals persisting in urban environments exhibit a
range of behavioural adaptations -- from shifts in activity timing and foraging strategies to altered communication signals
and reduced flight initiation distances -- that reflect both phenotypic plasticity and, increasingly, documented evolutionary
change over short timescales. This study examines behavioural adaptations to urban environments across five animal
groups -- birds, mammals, reptiles, butterflies, and ground beetles -- in Hyderabad, India, comparing behaviour metrics
between urban core, suburban, and rural populations at 36 sites over two years (2021-2023). Key behavioural metrics
include flight initiation distance (FID), activity timing, foraging patch use, nest/roost site selection, and vocal signal
frequency (for birds). Urban bird populations show significantly elevated song frequency (+18.4% mean dominant
frequency compared to rural conspecifics), reduced FID (-42.4%), and shifted activity times toward early morning to avoid
midday heat. Urban house crows show expanded food manipulation behaviours and tool-adjacent problem-solving
abilities not documented in rural populations. Urban reptiles show significantly reduced thermal refuge-seeking
behaviour. The implications of urban behavioural adaptation for conservation, pest management, and human-wildlife
coexistence are discussed.