1.   Humans usually get the disease from mosquito bites when the population of infected city birds is sufficiently large to infect enough mosquitoes.

2.   The construction crane is the most common city bird.

3.   The practice of trapping city birds and then selling them to hunters is common, according to Roth.

4.   The official city bird of Las Vegas is the construction crane.

5.   Walker also led a successful effort to have the parrot designated as the official city bird of Brownsville.