..., croaking, cawing... 
Gustavo Adolfo Becquer 「Legends, Tales and Poems」
...Great was his delight to find that it arose from the croaking of frogs, which was music to his ears...
W.H.G. Kingston 「Great African Travellers」
...The noise which Omrah had heard was the croaking of a frog, which denoted water at hand, and the sniffing of the horses confirmed him in his supposition...
Captain Frederick Marryat 「The Mission; or Scenes in Africa」
..."And snow or shine," said the robin, "you will keep on croaking...
Lenore Elizabeth Mulets 「Stories of Birds」
...I amtired of your croaking voice...
Abbie Farwell Brown 「The Curious Book of Birds」
...As we have seen, the nocturnal chorus of the birds is nowreplaced by the croaking of frogs and the stridulation ofcrickets...
Douglas Dewar 「A Bird Calendar for Northern India」
...Lastly, when not croaking amid the foliage, the Tree-frogs indulge inthe most graceful dives...
J. H. Fabre 「The Wonders of Instinct」
...Bravely, the older man led the way towards the croaking monster...
Various 「Astounding Stories of Super-Science, June, 1930」
...They came atlast to a barred door whose guard opened it at the croaking order ofthe frog-men who held the two, and they were thrust inside, as thedoor clanged...
Various 「Astounding Stories of Super-Science, August 1930」
...Itwas hoarse and harsh and croaking...
Various 「Astounding Stories of Super-Science July 1930」
...Save that amelancholy crow now and then flew croaking over head, or akangaroo was seen to bound at a distance, the picture of solitudewas complete and undisturbed...
Watkin Tench 「A Complete Account of the Settlement at Port Jackson」
...We no longer heard the discordant shriek ofthe parrots, or the hoarse croaking note of the bittern...
Charles Sturt 「Expedition into Central Australia」
...These noisy birds(Plyctolophus Leadbeaterii) kept incessantly screeching to their young,which answered them in notes that resembled the croaking of frogs, morethan anything else...
Charles Sturt 「Expedition into Central Australia」
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