Evidence of feeding during migration and of an early birth of the California gray whale (eschrichtius robustus).
D000818:Animals; D000831:Animals, Newborn; D002591:Cetacea / Q000502:physiology*; D005247:Feeding Behavior; D005260:Female; D007752:Obstetric Labor, Premature / Q000662:veterinary; D011247:Pregnancy; D014907:Whales / Q000502:physiology*