ガーガーquacking, cackling, gaggling, croaking, squawking, loudly (snore, complain, argue, etc.), noisily, with a buzzing sound (e.g. speaker), with a crackling sound

池(いけ)でアヒルがガーガー鳴(な)いています。

The ducks are quacking in the pond. {quacking, cackling, gaggling, croaking, squawking, loudly (snore, complain, argue, etc.), noisily, with a buzzing sound (e.g. speaker), with a crackling sound}

ラジオがガーガー鳴(な)っていてうるさいです。

The radio is making a loud crackling noise and it's annoying. {quacking, cackling, gaggling, croaking, squawking, loudly (snore, complain, argue, etc.), noisily, with a buzzing sound (e.g. speaker), with a crackling sound}

茂(しげ)みからカエルがガーガーと鳴(な)く音(おと)が聞(き)こえます。

You can hear the sound of frogs croaking loudly from the bushes. {quacking, cackling, gaggling, croaking, squawking, loudly (snore, complain, argue, etc.), noisily, with a buzzing sound (e.g. speaker), with a crackling sound}

大(おお)人数(にんずう)でガーガーと話(はな)すグループの近(ちか)くには座(すわ)りたくありません。

I don't want to sit near a group that's talking loudly in large numbers. {quacking, cackling, gaggling, croaking, squawking, loudly (snore, complain, argue, etc.), noisily, with a buzzing sound (e.g. speaker), with a crackling sound}

アヒルがガーガーと必死(ひっし)に鳴(な)きながら、子供(こども)を鷹(たか)から守(まも)ろうとしている。

The duck is desperately quacking, trying to protect its young from the hawk. {quacking, cackling, gaggling, croaking, squawking, loudly (snore, complain, argue, etc.), noisily, with a buzzing sound (e.g. speaker), with a crackling sound}