Final answer:
Yes, there are apps such as the 'Merlin Bird ID' app by the Cornell Lab of Ornithology that allow users to identify birds seen in one's backyard. These apps use AI to match photos or audio to a database of bird species.
Step-by-step explanation:
The question at hand inquires about the existence of an app that allows one to identify birds seen in the backyard. The answer to this is true. There are several apps available that can help identify birds by their appearance or by their songs.
One of the most popular examples is the Cornell Lab of Ornithology's 'Merlin Bird ID' app, which can identify birds based on a photo or sound recording. This app uses powerful AI to provide the user with a list of possible bird species that match the criteria entered.
As to the experimental setup mentioned for observing bird behavior and the use of deceptive calls, this pertains to a field study in ethology, a branch of biology, that could serve to gather evidence on interspecies communication and potential deceptive behavior used to gain an advantage at a feeding site.
Researchers can employ video cameras strategically placed at feeding sites to record interactions and verify the hypothesis on predator warning calls and interspecies recognition of these calls. The observed behavior then can be analyzed for patterns, such as increased false alarm calls when food is clumped and species B is present, indicating a potential use of deception by species A to monopolize the food source.