WhenToBird

Calypte costae · Trochilidae

When Do Costa's Hummingbirds Arrive in Nevada?

Adult male Costa's Hummingbird
Photo: David Rankin, CC BY 4.0 via iNaturalist

The Costa's Hummingbird is in Nevada all year. It turns up on about 11% of checklists at its peak (the second week of March) and on 7.1% in its quietest week (the second week of June).

When to look

PresentAll year
Peak weekMar 8-14the second week of March
Quietest weekJun 8-14the second week of June

Best: the second week of March. Here all year. Peak: on about 11% of Nevada checklists.

  1. Janpeak season
  2. Febpeak season
  3. Marpeak season
  4. Aprpeak season
  5. Maypeak season
  6. Juncommon
  7. Julpeak season
  8. Augpeak season
  9. Seppeak season
  10. Octpeak season
  11. Novpeak season
  12. Decpeak season

Darker months: more checklists report it. Outlined: peak month.

0%5%10%15%Jan 1-7: 7.7% of 5121 checklistsJan 8-14: 8.8% of 3908 checklistsJan 15-21: 9.3% of 4000 checklistsJan 22-31: 9.7% of 4991 checklistsFeb 1-7: 9.6% of 3377 checklistsFeb 8-14: 9.6% of 3747 checklistsFeb 15-21: 10% of 4852 checklistsFeb 22-28: 9.9% of 3712 checklistsMar 1-7: 11% of 3745 checklistsMar 8-14: 11% of 3763 checklistsMar 15-21: 10% of 4188 checklistsMar 22-31: 10% of 6027 checklistsApr 1-7: 9.7% of 4679 checklistsApr 8-14: 9.5% of 4609 checklistsApr 15-21: 11% of 4709 checklistsApr 22-30: 8.0% of 6984 checklistsMay 1-7: 9.6% of 5702 checklistsMay 8-14: 7.7% of 5928 checklistsMay 15-21: 7.7% of 5353 checklistsMay 22-31: 7.2% of 7352 checklistsJun 1-7: 6.7% of 4360 checklistsJun 8-14: 7.4% of 4183 checklistsJun 15-21: 7.2% of 3751 checklistsJun 22-30: 7.6% of 4126 checklistsJul 1-7: 8.2% of 3231 checklistsJul 8-14: 8.5% of 3024 checklistsJul 15-21: 7.8% of 2967 checklistsJul 22-31: 9.5% of 4212 checklistsAug 1-7: 9.4% of 2828 checklistsAug 8-14: 10% of 3036 checklistsAug 15-21: 8.8% of 3076 checklistsAug 22-31: 9.3% of 4345 checklistsSep 1-7: 9.8% of 3369 checklistsSep 8-14: 9.1% of 3728 checklistsSep 15-21: 10% of 3535 checklistsSep 22-30: 10% of 5028 checklistsOct 1-7: 10% of 3976 checklistsOct 8-14: 9.3% of 3781 checklistsOct 15-21: 10% of 3577 checklistsOct 22-31: 10% of 4986 checklistsNov 1-7: 9.1% of 3592 checklistsNov 8-14: 9.2% of 3685 checklistsNov 15-21: 9.5% of 3399 checklistsNov 22-30: 9.8% of 4544 checklistsDec 1-7: 8.7% of 3162 checklistsDec 8-14: 8.1% of 3191 checklistsDec 15-21: 7.7% of 3615 checklistsDec 22-31: 8.4% of 5101 checklistsJanFebMarAprMayJunJulAugSepOctNovDec
Share of complete checklists reporting it, by week (4 per month). Grey bars: fewer than 10 checklists, not counted.

Frequency is the share of complete checklists in Nevada that listed the bird, 2016–2025. It is not a head count, and it follows where and when people go birding. How to read it.

JanFebMarAprMayJunJulAugSepOctNovDec
today
Second week of November

Each county is shaded by the share of complete checklists there that listed the bird, blended with the weeks either side. Darker is more often. It follows where people watch birds, not how many birds there are. How to read it.

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Where in Nevada

Best counties

Share of checklists at the peak
  1. Clark CountyBest early August · 910 checklists that week, 80,458 in all25%
  2. Nye CountyBest the second week of August · 230 checklists that week, 17,872 in all18%
  3. Storey CountyBest late May · 64 checklists that week, 1,593 in all9.3%
  4. Esmeralda CountyBest late June · 14 checklists that week, 2,275 in all4.8%
  5. Lincoln CountyBest late August · 90 checklists that week, 3,842 in all2.7%
  6. Churchill CountyBest mid June · 58 checklists that week, 3,104 in all2.4%

Best spots

Share of checklists at the peak
  1. University of Nevada - Las VegasClark County, best the second week of June · 22 checklists that week, 1,154 in all72%
  2. Bird Viewing PreserveClark County, best mid January · 197 checklists that week, 9,268 in all64%
  3. Cottonwood LakeClark County, best early September · 80 checklists that week, 4,195 in all51%
  4. Silver Springs PoolClark County, best early May · 24 checklists that week, 275 in all50%
  5. Lake Mead National Recreation AreaClark County, best late October · 22 checklists that week, 222 in all43%
  6. Cornerstone ParkClark County, best early October · 29 checklists that week, 1,000 in all42%

Busy spots report more of everything; compare the checklist counts before you drive anywhere.

Best time of day

In Nevada, the Costa's Hummingbird is most often listed on checklists started between 5 and 7 am (18% of those checklists).

0%5%10%15%20%12 am: too few checklists (114) to judge1 am: too few checklists (99) to judge2 am: too few checklists (71) to judge3 am: too few checklists (108) to judge4 am: too few checklists (459) to judge5 am: 15% of 4313 checklists6 am: 19% of 17070 checklists7 am: 16% of 27389 checklists8 am: 11% of 24858 checklists9 am: 7.5% of 22012 checklists10 am: 7.1% of 19284 checklists11 am: 5.7% of 15592 checklists12 pm: 5.5% of 12432 checklists1 pm: 5.4% of 11386 checklists2 pm: 4.6% of 11262 checklists3 pm: 5.0% of 10721 checklists4 pm: 4.8% of 9090 checklists5 pm: 5.6% of 6397 checklists6 pm: 4.8% of 5012 checklists7 pm: too few checklists (3026) to judge8 pm: too few checklists (905) to judge9 pm: too few checklists (271) to judge10 pm: too few checklists (164) to judge11 pm: too few checklists (120) to judge12a3a6a9a12p3p6p9p
Share of checklists started in each local hour that reported it. It reflects when people go birding as well as when birds are active. Grey hours have too few checklists (under 2% of the state’s, or under 200) to judge.
Week-by-week table
MonthDays 1-78-1415-2122-end
January7.7%8.8%9.3%9.7%
February9.6%9.6%10%9.9%
March11%11%10%10%
April9.7%9.5%11%8.0%
May9.6%7.7%7.7%7.2%
June6.7%7.4%7.2%7.6%
July8.2%8.5%7.8%9.5%
August9.4%10%8.8%9.3%
September9.8%9.1%10%10%
October10%9.3%10%10%
November9.1%9.2%9.5%9.8%
December8.7%8.1%7.7%8.4%

Neighboring states

Common questions

When do Costa's Hummingbirds arrive in Nevada?
The Costa's Hummingbird is in Nevada all year. It turns up on about 11% of checklists at its peak (the second week of March) and on 7.1% in its quietest week (the second week of June).
When do Costa's Hummingbirds leave Nevada?
The Costa's Hummingbird does not leave Nevada: it is reported all year, from 7.1% of checklists in the second week of June to 11% in the second week of March.
When is the best time to see a Costa's Hummingbird in Nevada?
The Costa's Hummingbird is reported most often in the second week of March, on about 11% of Nevada checklists.
Where in Nevada are Costa's Hummingbirds seen most often?
By county, Clark County, Nye County, and Storey County have the highest peak reporting rates for the Costa's Hummingbird (counties with at least 200 checklists).