From https://www.inaturalist.org/pages/help#quality
The building block of iNaturalist is the verifiable observation. A verifiable observation is an observation that:
- has a date
- is georeferenced (i.e. has lat/lon coordinates)
- has photos or sounds
- isn’t of a captive or cultivated organism
It looks like many of your observations are captive organisms, so they aren’t counting toward the 50.