Hi All,

Thought I'd see what the eBird data show for hummer habits.

Using eBird frequency of observation graphs for all years, I looked at 
data for three areas:

"All"  All counties combined.
"North"  Franklin, Orleans, and Essex counties combined
"South"  Bennington and Windham counties combined
"All-2019"  All counties combined, this year

Did it this way to find out when in the spring we see the most 
hummingbirds, in the summer when we see the fewest, and in the late 
summers when we see the most.  And to see if the dates vary from north 
to south

Spring high -- North: May 15th to 31st.  South: May 15th to 31st. All: 
May 15th to 31st.
Summer low --  North: June 1st to 21st.  South: June 8th to 21st. All: 
June 18th to 21st.
Late summer high -- North:  Aug. 8th to 21st.  South:  Aug. 8th to Sept. 
15th.  All:  Aug. 8th to 31st.

Spring arrivals appear to happen at the same time throughout the state.
Summer periods of low numbers start earlier in the north, and end at the 
same time throughout the state.
The late summer highest numbers all begin at the same time throughout 
the state, but is over soonest in the north.

What about this year so far?

Spring high -- North, South, All:  May 15 to June 8th.  Birds arrived 
"on schedule" but kept visible in abundance a week longer
Summer low -- North:  June 8th to 30th.  South: June 15th to 30th All:  
June 8th to June 21st.  The low frequencies of observation appear to 
have have started a week later then usual, but did not continue as long 
before rising numbers of birds being seen.

All in all, the eBird data show the hummingbird arrive through out the 
state all the same time, and then the breeding activities might start a 
bit sooner in the north, and the last birds to leave are from southern 

The data for this year so far, show nothing much unusual, except the 
breeding might have been delayed a few days, averaged for the whole state.

The actual frequency percentages of observations are quite uniform 
around the state, except that they are somewhat lower in the three most 
northern counties.

Best wishes,


On 7/12/2019 6:02 PM, Charlie La Rosa wrote:
> I also noticed a similar drop for a few days earlier this month, but they
> are back and busy now. Males and females and maybe some young 'uns.
> Also red-breasted nuthatch feeding a group of three young and a hermit
> thrush with a nest of four eggs last week.
> Charlie La Rosa
> So. Washington
> *“The solution to any problem---work, love, money, whatever---is to go
> fishing, and the worse the problem, the longer the trip should be.”*
> ~ John Gierach, from *Standing in a River Waving a Stick*
> On Fri, Jul 12, 2019 at 12:18 PM alison wagner <[log in to unmask]> wrote:
>> I am still seeing female adults at the feeder and yesterday a very fresh
>> (and naïve) fledgling, first watching the adult, then slowly figuring out
>> how to get the syrup!  The competitive males have been MIA.
>> Ali Wagner
>>   Huntington
>> ----- Original Message -----
>> From: "Richard Harlow" <[log in to unmask]>
>> To: "Vermont Birds" <[log in to unmask]>
>> Sent: Friday, July 12, 2019 9:13:02 AM
>> Subject: Re: [VTBIRD] Where have all the hummers gone? (Long time passing)
>> Many thanks for this report! As a previous bander for 20+ years I truly
>> appreciate your work and your experience!
>> I have also experienced this seemingly abrupt drop in hummer feeder
>> activity. Also, I have noticed, at least here in Middlebury, VT, a drop
>> in butterfly species along with general decrease in pollinators, and
>> hoping that the decrease in hummers was not significant. Therefore,
>> again thanks for your report.
>> Dick Harlow, Middlebury, VT
>> On 7/12/19 08:46, anneboby wrote:
>>> Your observation about recent hummer scarcity is not alone, but fledging
>> has not yet occurred.  I band Ruby-throats at Jenny Lake near Corinth, NY
>> in the SE corner of the Adirondack State Park and based on over 40 yrs of
>> banding, newly fledged juveniles typically appear at the feeders about 25
>> July.
>>> These past two weeks hummers have been very scarce at my feeders.  Also,
>> I received a report 1-2 weeks ago from folks at Mooselookmeguntic Lake in
>> Franklin Co., ME where I also band that suddenly hummers disappeared from
>> their feeders where previously they had been abundant.  Based on about 20
>> yrs of banding there in June and August, as well as reports from Mooselook
>> feeder operators, there are years when hummer numbers drop in July then
>> come surging back in early August as newly fledged young appear.
>>> I'm not sure what causes the sometime July slump, but natural food is
>> abundant at this time and based on experience in ME, hummers range up to
>> 2-2.5 mi. between feeders.  I band at five feeder locations there along the
>> lake shore and there is an exchange of birds among these feeders.  At Jenny
>> Lake I've experienced recaptures of hummers within 1-2 hrs of banding at a
>> site 1.4 mi. away.  So, hummers don't just park at one feeder; they roam
>> about.
>>> Keep your feeders out...all is not lost.
>>> Bob YunickSchenectady, NY
>>> -----Original Message-----
>>> From: Larry & Mona Rogers <[log in to unmask]>
>>> To: VTBIRD <[log in to unmask]>
>>> Sent: Fri, Jul 12, 2019 6:57 am
>>> Subject: [VTBIRD] Where have all the hummers gone? (Long time passing)
>>> Until about ten days ago we had lots of hummingbirds at our small feeder
>> - we were refilling it every day or two.  Suddenly activity slowed way
>> down.  Is it possible that this year's young hummers have all fledged and
>> their parents have stopped using our feeders?
>>> We don't remember this from previous summers.
>>> Any thoughts?
>>> Larry and Mona
>>> Sent from my iPhone