Supplement 2. Raw phenological, life history, and ecological breadth data.

<h2>File List</h2><div> <p><a href="Adult_Survival.csv">Adult_Survival.csv</a> (MD5: b05142c8e4f507949a0de4448fd1b268)</p> <p><a href="Arrival_Date.csv">Arrival_Date.csv</a> (MD5: cbbf8fa18b115e9f3c05fd70f5896150)</p> <p><a href="Biogeography.csv">Biogeography.csv</a> (MD5: 627fe84e1ffb74d55065f06abc2cec12)</p> <p><a href="Breeding_Date.csv">Breeding_Date.csv</a> (MD5: 1ab82e4d46ff6703251af676248fa1a8)</p> <p><a href="Brood_Number.csv">Brood_Number.csv</a> (MD5: 6cda71ced7d80623f71bddd506904632)</p> <p><a href="Clutch_Size.csv">Clutch_Size.csv</a> (MD5: 5e1fd440ef3eea8046ce1e7eddc64735)</p> <p><a href="Diet_Breadth.csv">Diet_Breadth.csv</a> (MD5: ebc8b7663bd97a86f2b64a84b12033ec)</p> <p><a href="Egg_Mass.csv">Egg_Mass.csv</a> (MD5: 00af1875f709dfe307fa4b688cd716b6)</p> <p><a href="Foraging_Behaviour_Breadth.csv">Foraging_Behaviour_Breadth.csv</a> (MD5: 34d2fec478134a29c3143b8de278af85)</p> <p><a href="Habitat_Breadth.csv">Habitat_Breadth.csv</a> (MD5: 32ed27214f2580fa521f9661807e67dc)</p> <p><a href="Nest_Site_Breadth.csv">Nest_Site_Breadth.csv</a> (MD5: 96ac8ff7223e5e623d2449cd1a897744)</p> </div><h2>Description</h2><div> <p>These files contain species- and location-specific information for each of the ecological traits that we investigated.</p> <br> <p>Columns found in all files are as follows:</p> <ul> <li>Comparison: Independent comparison number, sequentially numbered, following the taxonomic order of Gill and Donsker (2010).</li> <li>Dominance: Whether species was classified as dominant or subordinate based on outcome of aggressive interactions (see Supplement 1 for details).</li> <li>Record: Unique record number for each site, year, or study from which data on a pair was gathered.</li> <li>Genus: Taxonomic genus of focal species, following Gill and Donsker (2010).</li> <li>Species: Focal species, following Gill and Donsker (2010).</li> <li>Mass: Mean mass values for each species.</li> <li>Location: Region where data were collected according to original references.</li> <li>Reference: Original reference from which ecological data were collected.</li> </ul> <p>Columns unique to Arrival_Date.csv and Breeding_Date.csv</p> <ul> <li>Julian.Date: Julian date calculated from first arrival or first egg dates in original reference (mean if original reference spanned multiple years).</li> <li>Date: Original date of first arrival or first egg in original reference (mean if original reference spanned multiple years).</li> <li>Details: how first arrival or egg date was defined in original reference.</li> </ul> <p>Columns unique to Clutch_Size.csv</p> <ul> <li>Clutch.Size: Clutch size from original reference (mean if original reference spanned multiple years).</li> </ul> <p>Columns unique to Egg_Mass.csv</p> <ul> <li>Calculated.Fresh.Egg.Mass: Egg mass as calculated in original reference.</li> </ul> <p>Columns unique to Brood_Number.csv</p> <ul> <li>Number.of.Broods.per.Year: Most common number of broods (excluding renests) produced annually for each species, from original reference.</li> </ul> <p>Columns unique to Survival.csv</p> <ul> <li>Annual.Survivorship: Average probability of a breeding-age bird surviving from one year to the next from original reference (mean if original reference spanned multiple years).</li> <li>N: Number of individuals used to estimate annual survivorship.</li> <li>Notes: Method used to estimate annual survivorship and which individuals were included in original reference.</li> </ul> <p>Columns unique to Diet_Breadth.csv, Foraging_Behaviour_Breadth.csv, Nest_Site_Breadth.csv, and Habitat_Breadth.csv</p> <ul> <li>X.Diversity: Calculated Shannon-Weaver index of diversity for trait of interest (mean if original reference spanned multiple years).</li> <li>X.Richness: Number of unique categories of the trait of interest observed in the original reference (mean if original reference spanned multiple years).</li> <li>N: Number of individuals included in original reference</li> <li>Notes: How the ecological trait of interest was defined in the original reference. </li> </ul> <p>Columns unique to Biogeography.csv</p> <ul> <li>Breeding.Range.Size: Size of breeding range within Americas in km2 as calculated in BirdLife International and NatureServe (2011) using a Lambert Azimuthal Equal Area projection.</li> <li>Wintering.Range.Size: Size of wintering range within Americas in km2 as calculated in BirdLife International and NatureServe (2011) using a Lambert Azimuthal Equal Area projection.</li> <li>Breeding.Range.Latitude: Latitude of the centroid of breeding range within Americas in degrees as calculated from maps in BirdLife International and NatureServe (2011).</li> <li>Wintering.Range.Latitude: Latitude of the centroid of wintering range within Americas in degrees as calculated from maps in BirdLife International and NatureServe (2011).</li> <li>Breeding.Range.Longitude: Longitude of the centroid of breeding range within Americas in degrees as calculated from maps in BirdLife International and NatureServe (2011).</li> <li>Wintering.Range.Longitude: Longitude of the centroid of wintering range within Americas in degrees as calculated from maps in BirdLife International and NatureServe (2011).</li> <li>Migration.Distance: Distance in km between centroid of the breeding range and the centroid of the wintering range, estimated using an online calculator (<a href="http://www.csgnetwork.com/gpsdistcalc.html">http://www.csgnetwork.com/gpsdistcalc.html</a>).</li> </ul> <br> </div>