The right side of
鹳 is
鸟 (bird) — that's your category clue. The left side
雚 also appears in
灌,
罐,
观 — all carrying the 'guan' sound. Most famous appearance in classical Chinese:
王之涣's 《
登鹳雀楼》 ('Climbing Stork Tower'), one of the most-memorized Tang poems.