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Merlin Bird App (Free) I have not used it so cannot give any guidance on it.

https://merlin.allaboutbirds.org/?mc_cid=4620a77399&mc_eid=16e8a93ef2

Part of the mission of the Cornell Lab of Ornithology is to help people find the answer to “what’s that bird?” We know sorting through a massive field guide, using search engines, and other resources can make it really challenging to figure out what you just saw—our goal is to make that challenge easier.

Merlin is designed to be a birding coach for bird watchers at every level. Merlin asks you the same questions that an expert birder would ask to help solve a mystery bird sighting. Notice that date and location are Merlin’s first and most important questions. It takes years of experience in the field to know what species are expected at a given location and date. Merlin shares this knowledge with you based on more than 800 million sightings submitted to eBird from birders around the world.

Merlin also asks you to describe the color, size, and behavior of the bird you saw. Because no two people describe birds exactly the same way, Merlin presents a shortlist of possible species based on descriptions from Cornell Lab experts as well as thousands of bird enthusiasts who helped “teach” Merlin by participating in online activities. They’ve contributed more than 3 million descriptors to help Merlin match your input with the most likely birds. When you identify a species and click “This is My Bird,” Merlin also saves your record to help improve its future performance.

Some people experience birds through the viewfinder of their camera, and putting a name to the bird they just photographed can be both rewarding and educational. The Photo ID feature in Merlin allows anyone with a camera to snap a photo and get a list of suggestions. Photo ID is yet another method to help you identify the birds you encounter.

We launched Merlin in 2014 with the goal of adding more species and more features in time. We appreciate your feedback about what’s working for you, what isn’t, and features you’d like to see. If you’d like to support our efforts to continue developing Merlin, please consider making a donation.

We hope you enjoy using Merlin and sharing it with your friends and family!