An ornithologist.....

[Workingman]

.....was cross breeding different birds.

He crossed and Owl with a finch and called it an Owch.

Then he crossed a Puffin with a Plover and called it a Pulover.

The Heron and Crow became a Herow.

And his cross between a Sparrow and a Lark is now a Spark.

He's still looking for a name for his crossed Diamond Dove and Rhea as Diarhea didn't sound right.

[Kaz]

The Falcon crossed with a Rook might be a problem too

[Workingman]

A Rocon sounds OK to me.

[Kaz]

[JoM]