Dr SWIFT PARROT on X: "We used GPS trackers to work out how swift #parrots cope in good vs. bad years. Fathers worked harder in bad times, but this didn't compensate for
BirdTricks GPS
GPS Bird Tracker Parrot Pigeon Gps Tracking Foot Ring for Bird Outdoor Flying - AliExpress
WE ARE FLYING WITH A DUMMY GPS TRACKER * bird tracker training* - YouTube