Common Water Rat vs 猩紅比藍雀

Hydromys chrysogaster compared with Piranga olivacea

Taxonomic Classification

Rank	Common Water Rat	猩紅比藍雀
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Mammalia (哺乳動物)	Aves (鳥綱)
Order	Rodentia (啮齿目)	Passeriformes (雀形目)
Family	Muridae (Mice & Rats)	Cardinalidae
Genus	Hydromys	Piranga
Species	Hydromys chrysogaster	Piranga olivacea

Evolutionary Relationship

Common Water Rat and 猩紅比藍雀 share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Common Water Rat

LC — Least Concern

猩紅比藍雀

LC — Least Concern

Physical Characteristics

Attribute	Common Water Rat	猩紅比藍雀
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Water Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

猩紅比藍雀

Habitat

Typically found in various aerial, terrestrial, and aquatic environments.

Range

Distributed across Colombia, Ecuador, Norway, United States, and Venezuela.

Common Water Rat

<em>Hydromys chrysogaster</em>, commonly known as the common water rat or rakali, is a semi-aquatic rodent in the family Muridae, native to Australia and New Guinea. It is classified as Least Concern by the IUCN, reflecting its relatively stable population across a broad range of freshwater and estuarine habitats on the Australian continent and associated islands. The species typically inhabits the banks of rivers, lakes, wetlands, and estuaries, where it constructs burrows in streambanks. It is highly adapted for an aquatic lifestyle, with partially webbed hind feet, a flattened head, and a dense waterproof coat. <em>Hydromys chrysogaster</em> is a carnivore, typically feeding on fish, crustaceans, mussels, frogs, and aquatic invertebrates, which it often carries to elevated feeding platforms to consume. The species is nocturnal and crepuscular, most active during early morning and evening hours near the water's edge. Biological traits including average lifespan, body length, and weight remain poorly documented in standardized databases, though adults are generally robust for a rodent, reportedly reaching body lengths of 20–35 cm excluding the tail. Geographic range details for this particular record remain incompletely documented in available data sources. Ecologically, the common water rat is an important apex predator in small-scale freshwater food webs and serves as an indicator species for wetland health in Australian riparian systems.

猩紅比藍雀

红唐纳雀(Piranga olivacea)在IUCN红色名录中被列为无危(LC)。广泛分布于其栖息范围内，种群稳定，目前无直接保育威胁。