Agelaius | 2025 |

: Born altricial (naked and helpless), they possess one of the fastest avian growth rates , increasing their body mass by 9–10 times within the first few days.

: They typically breed in marshlands, wetlands, or grassy areas near water, with females building deep cup-shaped nests lashed to reeds like cattails. Species Profiles yellow-souldered blackbird revised recovery plan - FWS ECOS agelaius

: Unlike many other birds, male Red-winged Blackbirds do not acquire their full adult plumage (glossy black with intense red/yellow patches) until their second year . In their first year, they often have an orange or streaked appearance. Breeding and Social Behavior : Born altricial (naked and helpless), they possess