ID these Arizona hummingbirds?

[msilver2]

these photos taken January 1 at the Desert Museum in Tucson

#1

 

#2

[Connor Cochrane]

I'm pretty sure 1 is Broad-billed while 2 is Broad-tailed.

[Hasan]

40 minutes ago, Connor Cochrane said:

I'm pretty sure 1 is Broad-billed while 2 is Broad-tailed.

No rufous/reddish on the flanks, tiny, compact structure lacking the 'long-winged' look of Broad-tailed- curious what brought you to that conclusion? Broad-tailed is very rare in the area during the winter.

Looks like an immature male Costa's to me.

Edited February 22, 2021 by Hasan

[Connor Cochrane]

12 minutes ago, Hasan said:

No rufous/reddish on the flanks, tiny, compact structure lacking the 'long-winged' look of Broad-tailed- curious what brought you to that conclusion? Broad-tailed is very rare in the area during the winter.

Looks like an immature male Costa's to me.

It probably is. It doesn’t have a costas fell to me though. I’m sure I’ll be corrected. 

[DLecy]

Bird number 2 has iridescent feathers on the forecrown, which rules out Broad-tailed. Looks like a Calypte to me...I agree with COHU.

[AlexHenry]

Has a Costa’s look to the face and a short bill, but the tail goes a beyond the wingtips a bit. Without seeing the color of those gorget feathers, I might leave it as Calypte sp. But given location (Desert Museum is a known good spot for Costa’s (at least fall through spring, they can be tougher to pin down in late spring in and early summer)), and the overall look, I think it’s probably Costa’s.