useless trivia: What Word Means: Large - Weighty?

Questions

The male house ---------- builds several nests as part of his courtship ritual. Once the nests are completed, his potential bride looks them all over, then selects one as her preferred choice for the laying of her eggs.?

The color of the blood of an ---------- is bluish-green.?

A bison can jump ----------?

There are 328 species of ----------?

The male ---------- sheds its antlers every winter and grows a new set the following year.?