In the film there is a bird named as the Pygmy Nuthatch, recognised by its call.

This bird does not look like a pygmy nuthatch, does not have the call of a pygmy nuthatch, and even if it did, the area of origin given is inaccurate too.

This is an entire article about someone going down a full investigation of this tripley fucked up bird.

It turns out that nobody knows who decided it was going to be a pygmy nuthatch, and whoever it was decided this without stopping to consider that it was literally illegal to use a pygmy nuthatch on film due to the migratory bird treaty act

They still didn’t get one that looked even remotely like one because they wanted a fancy dramatic looking bird

They then didn’t even USE the actual call of a pygmy nuthatch, which they 100% could have done

They chose a bird by just deciding what would dub to the whistle call cameron diaz acted out in an already shot scene

They dont even remember what the bird for that WAS

EVEN EXPERTS WERE NOT SURE

The author tried to use bird shazam (merlin)

Didn’t work.

Author got permission to use the SPECIAL MORE POWERFUL LOCATION UNRESTRAINED merlin

Merlin says its a thick billed fox sparrow, author isn’t sure. Asks the bird expert

Bird expert goes into his special bird spectrogram library of like a bazillion birds and finds the specific individual bird it was (thick-billed fox sparrow recorded by Thomas G. Sander on June 2, 1990 at the Black Pine Spring Campground in the Deschutes National Forest in Oregon)

Turns out it doesnt sound right because they SPLICED IT

He went all the way up the chain to talk to the director of the film