verb, variation of ‘bellow’ | ‘bellow’: to roar as a bull or as a cow when excited (“bellow, v.” OED)
“Bessie was her name, and then when she grew up and had a calf she lost it. Like it died and she bellered for it. She forgot that the calf was dead, and she kept looking for it. And so she’d beller. Oh for days she looked for her calf, eh. So then she became Bellering Bessie.”
“We were milking cows, and the cows bellered and jumped.”
“The cattle were all around the barn bellering and all, to get milked and so on.”