It's a New Day

June 2020

Vol. 48, No. 3

Gleanings: Listening to Yellow Warblers

David M. Larson


Many species of animals have vocal alarm calls that they use to alert conspecifics to predators. This intraspecific communication is particularly widespread in songbirds and involves different vocalizations for different types of threats. As noted in an earlier "Gleanings," Black-capped Chickadees have different alarm vocalizations for flying and perched raptors (Larson 2016). Specific alarm calls for other dangers, such as nest parasites, are less commonly recognized.

To view the rest of the article you'll need to subscribe. Bird Observer publishes original articles on birding locations, on avian populations and natural history, on regional rarities, field notes, field records, photographs, and art work.

Our mission: to support and promote the observation, understanding, and conservation of the wild birds of New England.