# Assessment of a non-invasive approach to pregnancy diagnosis in gray whales through drone-based photogrammetry and faecal hormone analysis

> Research article (Royal Society Open Science, 2023) · cited 14× · AI/ML

**Wikidata**: [openalex:W4384831007](https://www.wikidata.org/wiki/openalex:W4384831007)  
**Source**: https://4ort.xyz/entity/assessment-of-a-non-invasive-approach-to-pregnancy-diagnosis-in-gray-whales-through-drone-based-photogrammetry-and-faeca