Ah-ha! That explains it- it ain’t Nick Jr., but Viacom’s other kid network, Noggin!
How ironic that the characters we were looking for are, in fact, detectives, who look for things! Looking at the interstitials, there ain’t much there for a show- it just looks like an interstitial to teach children about animals. “What animal is this?”
Also, I can see why we failed in our search before- not only is Nick Jr. not Noggin, but when one thinks of “birds,” one doesn’t think immediately of chickens. One thinks of flying birds. Chickens don’t usually fly- baby ones, especially.
Thank you, Nutty Bunny, for solving this for all of us- especially me!
Googling it, this animator says he worked on “a pilot” as well as “an interstitial…” so maybe there is a possibilty of ChickiePoo and Fluff becoming a series?