Lesser scaup by similar-looking "Aythya" hybrids. Except for hybrids between the two scaup species, the most reliable mark is the black bill-tip of hybrids, whereas in the scaups only the very point ("nail") of the bill is black. This is even recognizable at considerable range, as the scaups' bills appear uniformly grey from a distance, whereas those of hybrids look two-colored. European hybrids typically involve the tufted duck ("A. fuligula"), yielding offspring that have a small nape crest unlike any European "Aythya" species. Female and immature hybrids typically lack the white bill base, except in those between lesser scaup and ring-necked duck,
What the Little Bird Told Him an average score of 6.5 out of 10 on the review aggregator Rotten Tomatoes, with the site's consensus stating: "The character work in 'What the Little Bird Told Him,' along with the comeuppance of the Electrocutioner, are strong enough to overcome the anti-climactic face-off between Fish and Carmine Falcone." Matt Fowler of IGN gave the episode a "okay" 6.4 out of 10 and wrote in his verdict, "I almost want to forgive the head-scratching moments from this week's Electrocutioner story since "Gotham"s usual M.O. for these types of villain cases is to dumb things down. Easy investigation, few bits of