由於埃德蒙頓龍的分佈廣泛,北至阿拉斯加州,南到科羅拉多州,其中包含北極區,因此有科學家提出埃德蒙頓龍可能具有遷徙過冬的習性。在2008年,Phil R. Bell、Eric Snively提出一份關於恐龍遷徙的研究,認為大部分生存於極區的恐龍可能有過冬的習性,包含:獸腳亞目、蜥腳下目、甲龍下目、稜齒龍類、鴨嘴龍科;而帝王埃德蒙頓龍可能會遷徙達2,600公里的路程,每小時大約移動2到10公里[32][33]。
在1984年,大衛·威顯穆沛(David B . Weishampel)首次提出鴨嘴龍類的進食方式研究。威顯穆沛根據鴨嘴龍類的頭部構造,提出下頜可以做出前後移動的動作,而當嘴部咬合時,上頜的骨頭會往外側彎曲。當咬合時,上下頜的牙齒會將嘴中的食物磨碎[7][41]。這種動作類似哺乳動物的咀嚼動作,但以不同的方式進行[42]。威顯穆沛研究的重要性在於,根據牙齒的磨痕方向,提出頜部的運動方向。雖然其他方向的運動也有可能造成類似的牙齒磨痕。科學家已利用目前技術檢驗這些可能的其他運動方向[43]。
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