In this comprehensive guide, you'll discover a variety of Animals that Start with X. From the exotic to the everyday, you'll ...

Hummingbird nectar is made up of sugar and water. The birds can find natural nectar from flowers or broken fruit, as they both provide a source of sugar. However, they rely on humans for much of their ...

10.5061/dryad.4j0zpc8bq). Descriptions of iridescent feather structures are taxonomically biased, with some groups well represented (>20 species represented in the database: Sturnidae, Trochilidae, ...