I can't find any indication that they are. (There are a variety of species in the catalpa family; some of them might have toxic leaves, but the two main species in the US don't seem to.)
It could be a Catalpa (http://en.wikipedia.org/wiki/Catalpa).
Catalpa speciosa is the Latin name for the Northern Catalpa
the Northern Catalpa
Catalpa ovata was created in 1837.
No. Mulberry leaves are not at all toxic to chickens. They contain a variety of vitamins and nutrients, and have no anti-nutritional factors or compounds which are toxic to humans or chickens.
The forget-me-not is not toxic. The Chinese forget-me-not is mildly toxic.
Most types of Catalpa are deciduous. None are coniferous.
It is primarily an ornamental tree. The wood is too soft to use as lumber, but it is sometimes used in acoustic guitars. It is also used to attract and hold Catalpa Worms, which are used for fishing
The Catalpa Rescue - 2007 is rated/received certificates of: Australia:PG