The difference between Magpie-lark and Mudlark

Magpie-lark as a noun:

Grallina cyanoleuca, a bird common in Australia.

Mudlark as a noun (slang):

A pig; pork.

Mudlark as a noun (rare):

One who scavenges in river or harbor mud for items of value, especially in London during the Industrial Revolution. One who cleans sewers or scavenges in them. A person who begs near a river.

Mudlark as a noun:

A child that spends most of its time in the streets, especially in slum areas. A child who plays in the mud. Any dirty or unkempt person.

Mudlark as a noun (slang):

A soldier of the Royal Engineers.

Mudlark as a noun:

Any of various birds that are found in muddy places or build their nests with mud, especially and Alauda arvensis.

Mudlark as a noun (AU):

The Grallina cyanoleuca that builds its nest with mud into a bowl-like shape.

Mudlark as a noun:

A racehorse that performs well on muddy or wet tracks.

Mudlark as a verb (intransitive):

To scavenge in river or harbor mud for items of value.