[Tweeters] Best source for local phenology?

[Steve Hampton]

Yes, the research on breeding time wrt climate change is a bit mixed. I
talked about this in my presentation to Black Hills Audubon a couple months
ago (video on their webpage) and in a recent article in *Birding *magazine
(the one with the tern on the cover). In general, long-distance migrants
seem to be wired more to day length than weather.  But resident species
(e.g. chickadees, etc) are possibly more flexible. They need 6,000 moth
caterpillars to fledge a nest, and these are in general coming earlier
now.  I'd be curious to compare breeding phenology (e.g. egg laying, chick
hatching, chick fledging dates) between resident species and long-distance
migrants. Of course, each species has a typical uniqueness!



On Mon, Feb 20, 2023 at 12:21 PM HAL MICHAEL <ucd880 at comcast.net> wrote:


> I look at my nest box data. It is, obviously, only for hole nesting birds

> but over 30 years some trends should emerge.

>

> Nesting phenology is something that will require long-term data sets.  I

> was looking at my boxes and there seems to be a trend to actually nesting

> later.  While I think this is because of (ultimately) food resources this

> did not correlate with rainfall or temperature during the nesting period

> (Spring).  A number of species (certainly waterfowl) seem to nest in

> response to food availability.  That is, there is some trigger that tells

> them good food will be available for the hatchlings.

>

> I have read (somewhere) that warming spring temperatures have induced

> plants to bud out and grow earlier.  Probably increases bug emergence.  But

> migratory birds are tied more strongly to daylength and thereby arrive on

> the grounds after bug emergence and consequently miss the bug bloom, so

> less food is available.

>

> Lots of variables to consider but you'll need really long (multi decadal)

> data sets for it.

>

> Hal Michael

> Board of Directors, Ecologists Without Borders <http://ecowb.org/>

> Olympia WA

> 360-459-4005

> 360-791-7702 (C)

> ucd880 at comcast.net

>

>

> On 02/20/2023 11:33 AM Steve Hampton <stevechampton at gmail.com> wrote:

>

>

> I'd love to know what you find about breeding timing data. This is of

> great relevance to studying changes wrt climate change.

>

> Regarding migration, eBird bar charts are pretty good. eBird maps allow

> you to zero in only by month, but the bar charts are by week. Note the wave

> of Barn Swallows at the moment!

>

>

>

> On Mon, Feb 20, 2023 at 11:26 AM Tucker, Trileigh <TRI at seattleu.edu>

> wrote:

>

> Hi Tweets,

>

>

>

> I’m wondering if somewhere out there is an all-in-one guide to W

> Wash/Salish Sea area/Seattle bird phenology. I have Morse et al.’s *Birds

> of the Puget Sound Region*, Hunn’s *Birding in Seattle and King County*,

> and Fisher’s *Birds of Seattle*—all excellent guides for their own

> purposes, but none of which includes the kind of chronology I’m looking

> for.

>

>

>

> The Burke Museum has a nicely done summary of first-egg dates for local

> species here

> <https://www.burkemuseum.org/sites/default/files/2019-07/BreedingPhenologyProject_sm.pdf>,

> and Seattle Audubon’s BirdWeb <http://www.birdweb.org/birdweb/birds> has

> tons of useful information, but it’d be great to have more detailed

> phenology data. Of course I can look up phenology online on a

> species-by-species basis, and there are some rich databases out there, but

> I’d love to get a single guide that shows all local species’ annual

> patterns for nest-building, egg-laying, fledging, migration, etc. I’m

> picturing something like a bar chart for each species with Jan-Dec along

> the top line, and lower lines for each behavior, but I’ll take whatever I

> can get. 😊

>

>

>

> Does such a thing exist?

>

>

>

> Thanks much and good birding to all,

>

> Trileigh

>

>

>

> *Trileigh Tucker*

>

> *Pelly Valley, West Seattle *

>

> *NaturalPresenceArts.com <http://naturalpresencearts.com/>*

>

>

>

>

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>

> --

> ​Steve Hampton​

> Port Townsend, WA  (qatáy)

>

>

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-- 
​Steve Hampton​
Port Townsend, WA  (qatáy)
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