Question:
Is a cardinal considered a kosher bird that one can perform shilu’ach hakan with one of its nests?
Answer:
This bird is not considered kosher for eating purposes, as we do not have a clear tradition that it was eaten as a kosher bird. However, for SHiluach Haken it is sufficient that it has the signs provided by Chazal for a kosher bird, which the cardinal does.
Sources:
Shu”T Minchas Elazar 3:43, See Rama Y:D 82:3