Evening Grosbeak: 8 in size. A large, yellow bird with black wings. Named for its large,conical bill. The male Evening Grosbeak has a dark head, with yellow on its forehead and over its eyes.The female is grayish-tan in color, with black wings.Food: Evening Grosbeaks prefer tree seeds-especially box elder. large, yellow bird with black wings. Named for its large,conical bill. The male Evening Grosbeak has a dark head, with yellow on its forehead and over its eyes. The female is grayish-tan in color, with black wings. Food: Evening Grosbeaks prefer tree seeds-especially box elder.