A spiral galaxy like the Milky Way contains stars, stellar remnants, and a diffuse interstellar medium (ISM) of gas and dust. The interstellar medium consists of 10â4 to 106 particles per cm3 and is typically composed of roughly 70% hydrogen by mass, with most of the remaining gas consisting of helium.
What do cardinals eat for food? Cardinals eat a variety of wild and feeder seeds, including sunflower, safflower and most other seeds in basic wild bird seed mixes. In warm seasons they also eat insects anâ¦d worms and feed their babies mainly an insectivore diet.
They are territorial birds in breeding season, at which time males will aggressively stake out a range by singing and defend it from rivals. Red-crested Cardinal. This bird, Paroaria coronata, is commonly referred to as a cardinal but does not belong to the genus Cardinalis. A native of southern South America, this cardinal has been successfully introduced to other tropical and semi-tropical regions such as Hawaii and Puerto Rico.