Biologist Tim Shields recently let the Haines Borough Planning Commission in on a little secret – there’s a pond at the airport teeming with toads.

One sunny day two weeks ago, Shields pulled back some brush at the pond to expose a pile of baby toads – as many as 500 heaped up in a softball-sized mound – in tall weeds close to the water.

The discovery was an affirmation for Shields that the pond,…