ASSESSMENT OF HEAVY METAL CONTAMINATION IN WATER, SOIL, AND FEATHERS OF Bubulcus ibis IN CANAL ECOSYSTEMS OF PAKPATTAN, PUNJAB, PAKISTAN - Waseem Akram; Khalid Mahmood Anjum; Nawal Tabassum; Hadia Liaqat; Rubia Afzal; Azeem Ali; Atif Yaqub (Journal of Animal and Plant Sciences, 2026)