Chargers can use Map Filters to help search for specific vehicles based on 3 factors:
1. Vehicle Type: The type of task.
2. Last Ridden: The last time this vehicle was scanned for a ride.
3. Last Located: The last time this vehicle's location was updated.
4. Price: The payout amount for performing the assigned task.
If you are having a hard time locating birds, try adjusting your filters to show vehicles that were ridden or located more recently.