Please submit your observations to Ebird.org.
For comparison, this is the map of heermans gull http://ebird.org/ebird/map/heegul?n...mr=1-12&bmo=1&emo=12&yr=all&byr=1900&eyr=2015
I see one observation from Florida and none from Yucatan, so you might be met with a request for documentation. Photos is an easy way
Niels
For comparison, this is the map of heermans gull http://ebird.org/ebird/map/heegul?n...mr=1-12&bmo=1&emo=12&yr=all&byr=1900&eyr=2015
I see one observation from Florida and none from Yucatan, so you might be met with a request for documentation. Photos is an easy way
Niels