Here's a pectoral sandpiper. This guy has an inflatable throat sac that he uses to make deep, hooting calls at lady sandpipers. He will also sometimes bob around near a female and make gurgling noises. He thinks it's sexy.
Here's a pectoral sandpiper. This guy has an inflatable throat sac that he uses to make deep, hooting calls at lady sandpipers. He will also sometimes bob around near a female and make gurgling noises. He thinks it's sexy.