Their experiences are often in sensory realms alien to us. We can only imagine what it is like to have an umwelt that includes being able to recognize objects down to details in their surface texture using echolocations; or using the earth's magnetic field to orient ourselves during long-distance migrations; or communicating with others of their species by means of electric or heat signals.
Text source: Jonathan Balcombe (2010)Second Nature. Macmillan. p.77