Why did Charles Darwin love pigeons?

In London, where pigeons are a common sight, a local resident began exploring their behaviors and characteristics, seeking to develop a newfound appreciation for these urban birds. Through rigorous research, they discovered fascinating aspects about pigeons that challenge negative perceptions. One striking fact is that adult pigeons uniquely possess the ability to produce crop milk, a substance rich in nutrients that they regurgitate for their hatchlings during the first ten days after hatching. This crop milk originates from cells in the lower esophagus, rather than a mammary gland, marking a considerable distinction from traditional milk. Furthermore, it's noted that only a few other avian species, such as penguins and flamingos, share this capability. In addition to their reproductive adaptation, the research highlighted how pigeons build notoriously poor nests that often lack structural integrity, resulting in complaints from urban dwellers regarding their messy and sometimes hazardous nesting habits. These insights portray pigeons in a more nuanced light, encouraging communities to offer a kinder perspective on these misunderstood city residents. By acknowledging the remarkable traits and behaviors of pigeons, more people may foster a sense of admiration and connection with these often-overlooked birds, replacing ambivalence with appreciation.