Tricolored blackbirds form the largest colonies of any North American land bird ... While its big breeding colonies make the species seem abundant to casual observers, the blackbird's gregarious ...

Tricolored blackbirds form the largest colonies of any North American land bird ... While its big breeding colonies make the species seem abundant to casual observers, the blackbird's gregarious ...

While the Red-winged Blackbird is abundant over most of the continent, the very similar Tricolored Blackbird has a very small range in the Pacific states. It differs in its highly social nesting: in a ...

In all, an estimated 15,000 Tricolored Blackbirds descended on 80 acres of Mendonsa’s triticale crop. Once totaling millions, the Tricolored Blackbird population has declined by 64% in the past six ...