Our present study investigated the ecological density, herd distribution and Diurnal Budget of Behavioral Activities amongst Free Ranging and Semi-captive Blackbucks (Antilope cervicapra) at Lal Suhanra National Park (RD25), Sheikh Mohammad Bin Zayed Al- Nahyan Conservation Centre Black Buck Enclosure and sections of Dodhlan Forest during three seasons (Summer, Monsoon and Winter) for year 2019-2023. By the end of study period, Ecological density at Lal Suhanra National Park (0.10 individuals/ha), Sheikh Mohammad Bin Zayed Al- Nahyan Conservation Center Black Buck Enclosure (0.45 individuals/ha) and Dodhlan Park, Fort Abbas (0.28 individuals/ha) were calculated, while Male to Female ratios were observed to be 2/1, 3/4 and 2/3 respectively. Unpredictably higher, percent increase in the blackbuck population during the year 2020 at Lal Suhanra National Park (16.06%), Sheikh Mohammad Bin Zayed Al- Nahyan Conservation Centre Black Buck Enclosure (15.85%), and Dodhlan Park in Fort Abbas (38.46%), indicated a positive impact of COVID-19-related lockdown measures. A definite pattern of behavioral activities was observed during specific parts of the day which varied across different seasons. Amongst all blackbuck age groups, foraging activity was most pronounced during monsoon (P<0.0001), while resting was least prominent during the same season. Foraging activities peaked from late morning to midday and again just before dusk, while afternoon hours were predominantly spent resting. Peaks in all behavioral activities varied with seasonal changes. Throughout the seasons, adult blackbucks exhibited longer durations of foraging, while fawns were frequently observed engaging in miscellaneous activities compared to other age groups.

Keywords: Budget of Behavioral Activities, Diurnal, Foraging, Lal Suhanra National Park, Percent increase in population, Semi-captive Blackbucks