Second Florida Breeding Bird Atlas. Why should you help the Atlas? (BBA II) Atlas surveys are fun It...
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Transcript of Second Florida Breeding Bird Atlas. Why should you help the Atlas? (BBA II) Atlas surveys are fun It...
![Page 1: Second Florida Breeding Bird Atlas. Why should you help the Atlas? (BBA II) Atlas surveys are fun It is done on your own time schedule It’s birding with.](https://reader036.fdocuments.us/reader036/viewer/2022062518/56649ea95503460f94bae2d0/html5/thumbnails/1.jpg)
Second Florida Breeding Bird Atlas
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Why should you help the Atlas? (BBA II)
Atlas surveys are fun
It is done on your own time schedule
It’s birding with a purpose
We are all volunteers
We need your help!
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Expected Output
Updated distribution maps of breeding birdsChange maps highlighting breeding distributionRelative abundance maps Comparison of BBA changes with trends revealed by the Breeding Bird Survey.Breeding chronology information. Specific location information on a score of species of conservation interest.
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Summary of the Birding Protocol1. Species list
2. Breeding evidence
3. Focal species
4. Change map
5. Missed species in the quad
6. Mini-routes
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Objectives: Field Studies
1. Provide a sample of studied areas2. Provide additional information on breeding3. Determine and map breeding distribution4. Provide a reliable data base 5. Involve citizen scientists in a fascinating
research project.6. Work with land owners to serve as
ambassadors to the community.7. Finish the project in a timely manner.8. Produce relative abundance data
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Objectives: Analysis and Publication
Analyze the database developed for conservation information, particularly for species of conservation concern.
Publish results of the Atlas on the Internet, including distribution, distribution changes, and analyses.
Publish a book of the results.
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Atlas Grid
Grid-based survey of the bird species breeding in Florida
Grid is based on US Geological Survey quadrangles
Each Quad is broken into six survey Blocks
Areas vary from 10.7 square miles to 11.2 square miles
1(NW)
4(NE)
2(CW)
5(CE)
3(SW)
6
(SE)
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Atlas Plan
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Maps
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Definitions
BBA I
BBA II
Quad
Block
Sample Block
Comparison Blocks
Priority Blocks
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Atlas Minimum Field Goals
Resurvey the SE Block of every USGS Quad covering Florida. In the event the SE Block is over water, resurvey the next Block that was selectedIf the SE Block is available, but was not covered in the first Atlas, it should be thoroughly coveredShould require at least two early morning visits during the breeding season some follow-up
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When is a Priority Block Done?
Primary guide: You have covered all the habitats present during the time the birds are breeding and also tried for nocturnal species.
Secondary guide: You have reached about the same number of breeding species reported in BBA I
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For Non-priority Blocks
After you have covered the Priority Block, cover habitats not present in the priority block
Missed Species are a mark of success
Under no circumstances should you add a species because you “know it is present”
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Atlas Regions
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Selection of Blocks to Cover
Systematic sample of one block out of six
Matched paired sample with the first atlas
Missed species
Miniroutes
Atlasing additional blocks
Cruising the Quad for New, Focal and Uncommon Species
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Focal and Non Focal Species
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Safe Dates
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Breeding Codes: OB Category
Observed: No Local Breeding Evidence
O Species (male or female) observed in a block during its breeding season with no evidence of breeding.
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Breeding Codes: PO Category
SH Species (male or female) observed in suitable nesting habitat during safe dates.
SM Singing male present, or breeding season calls (or drumming by woodpeckers) heard
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Breeding Codes: PF Category
S 7 or more territorial males observed
S = seven discrete observations of a species
P Pair observed in suitable nesting habitat
T Permanent territory presumed
C Courtship behavior or copulation
V Visiting probable nest site
A Agitated behavior
B Brood patch or cloacal protuberance
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Breeding Codes: CO Category
NB Nest building DD Distraction displayNU Used nests or egg shellsFE Female with egg in oviductFY Recently fledged youngCF Carrying food for young ON Adults entering or leaving a nest FS Adult carrying fecal sacIP Incubating position NE Nest with egg(s)NY Nest with youngCowbird egg or young
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Web Site and Data Entry
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Species Accounts
Not all codes apply to all species.
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Exotic Species
Egyptian Goose among other species are becoming part of our avifauna.
Please record all unrestrained exotics.
Even Chickens! (Red Jungle Fowl)
Exotics are a part of our environment regardless of whether we can put them on our ABA list or not.
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Colonial Waders
Colonial waders (not Green heron or bitterns) should be coded as O unless they are observed at a nest colony.
V – Visiting probable nest site can be used for species at the site but where no actual nesting activity was observed.
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Vultures
Soaring vultures are O
SH can be used for birds rising from suitable habitat in the morning (not near a feeding spot) or roosting April – July.
Breeders roost near the nest site and control access to roost sites.
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Kites
Swallow-tailed Kites may forage miles from nest site. Flocks and high flying birds should be coded as O
They stay closer to nest site when young are in the nest.
Preferred dates 4/20-6/20.
Mississippi Kites similar, preferred dates 5/1-7/15.
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Sandhill Cranes
Wintering Sandhill Cranes are found in flocks.
Be sure not to record these flocks as SH or any other codes.
Focal species only in Regions 1-4.
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Crested Caracara
Adults tend to stay on territory (generally less than half the size of a block.)
Juveniles (brown colored) often wander. Individual juveniles should be coded as O. Juveniles with adults can be coded FY.
2nd and 3rd year birds do not breed but look like adults. Code these as SH.
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Barn Owls
Migrants are possible.
Preferred dates 4/1 – 8/31
Mark winter birds as O and look for better evidence.
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Chimney Swifts
Swifts rarely forage more than 0.5 km from nest site.
Flying swifts can be coded as T – Territorial (within safe dates.)
Trio flying can be coded as C.
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Ruby-throated Hummingbird
Southbound migrants may appear by July 1
Preferred dates 5/1 – 6/30.
If someone reports birds at a feeder, ask if they were present during preferred dates.
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Purple Martin
Fledge early and form large roosts.
Juveniles away from nest sites should not be recorded as breeders.
PO codes not to be used (martins on a house can be coded V- Visiting probable nest site.)
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Barn Swallows (and others)
Should not use PO codes.
Swallows forage far and wide.
Only record breeding evidence when an actual nest site is found.
V – Visiting nest site can be used for swallows flying under a bridge.
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Louisiana Waterthrush
Very early migrant.
Migrants arrive by late June in north FL
Non-singing birds after June 25 should not be recorded as breeders.
Preferred date range 5/1 – 6/30.